1122
RFC 1122 lists the requirements for internet host communication layers.
- Even
- Composite
Where 1122 fits
Why 1122 is special
It is where the internet's four-layer model is actually written down, rather than the seven-layer OSI model taught alongside it.
1122 connects to:
- historical years — appears in
- 1123 — appears alongside
- internet protocol numbers — appears in
Same number, different meanings
How 1122 is understood across different contexts — never implying one meaning because of another.
- Mathematics
It is where the internet's four-layer model is actually written down, rather than the seven-layer OSI model taught alongside it.
- History
In 1122, the Concordat of Worms ended the Investiture Controversy by separating spiritual from secular appointment (Europe).
- Technology & computing
RFC 1122 describes the link, internet, transport and application layers and states conformance requirements for each, using MUST, SHOULD and MAY throughout.
1122 is part of
Factors & digit properties
- Divisors (16)
- 1, 2, 3, 6, 11, 17, 22, 33, 34, 51, 66, 102, 187, 374, 561, 1122
- Prime factorisation
- 2 × 3 × 11 × 17
- Digit sum
- 6
- Digital root
- 6
Representations
- Decimal
- 1122
- Scientific notation
- 1.122 × 10^3
Roman numerals
M C X X I I
Binary
1 0 0 0 1 1 0 0 0 1 0
1 × 1,024 + 0 × 512 + 0 × 256 + 0 × 128 + 1 × 64 + 1 × 32 + 0 × 16 + 0 × 8 + 0 × 4 + 1 × 2 + 0 × 1 = 1,122
Octal
2 1 4 2
2 × 512 + 1 × 64 + 4 × 8 + 2 × 1 = 1,122
Hexadecimal
4 6 2
4 × 256 + 6 × 16 + 2 × 1 = 1,122
Read as powers of two: 1,024 + 64 + 32 + 2 = 1,122.
In historical numeral systems
Egyptian
1 lotus, 1 coil of rope, 2 hobbles, 2 strokes
1 × 1,000 + 1 × 100 + 2 × 10 + 2 × 1 = 1,122. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
1 corner wedge + 8 vertical wedges (sixties place), 4 corner wedges + 2 vertical wedges (units place)
18 × 60 + 42 = 1122. Places are separated by a space on the tablet, with the higher place written first.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Abundant number
- Happy number
- Harshad (Niven) number
Related numbers & connections
1122 is a year in the 12th century, in the 1120s.
Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
- appears alongside1123
why?
Strength 0.50, confidence "high".
- appears inNumbers that make the internet work
why?
Strength 0.50, confidence "high".
History
In 1122, the Concordat of Worms ended the Investiture Controversy by separating spiritual from secular appointment (Europe).
DocumentedHistoryGeography: EuropePeriod: 1122
Technology & computing
RFC 1122 describes the link, internet, transport and application layers and states conformance requirements for each, using MUST, SHOULD and MAY throughout.
DocumentedTechnology & computingGeography: International — IETFPeriod: 1989
Common questions
Is 1122 a prime number?
No, 1122 is not prime.
What are the factors of 1122?
The factors of 1122 are 1, 2, 3, 6, 11, 17, 22, 33, 34, 51, 66, 102, 187, 374, 561, 1122.
What is 1122 in Roman numerals?
1122 in Roman numerals is MCXXII.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 2 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026