22

22/24, or 916 parts per thousand. The traditional standard for gold coinage and much South Asian jewellery. The scale is karat with a K — a proportion of gold in an alloy — and is not the carat with a C used for gemstones, which is a unit of mass equal to 200 milligrams. A one-carat diamond and 24-karat gold have nothing in common but a homophone.

CWE-22 is path traversal: input incorporated into a file path without restriction, so relative segments reach outside the intended directory. It remains common in archive extraction and file download endpoints.

The port assigned to SSH is 22 (worldwide, IANA registry). It was free next to telnet on 23 when SSH was written in 1995, and the author asked IANA for it. Moving a server off 22 reduces automated scanning noise and provides no real security by itself.

Port 22 carries SSH, the encrypted protocol most remote server administration runs over. Like 3306 for MySQL it is heavily scanned precisely because it is standard, which is why moving it is a common if only mildly effective hardening step — obscurity slows automated scanning without stopping a targeted attempt.

There are about 22 months of gestation in an African elephant, the longest of any land mammal (African elephants).

There are about 22 million tonnes of copper mined each year. Figure as of 2023. Demand is closely tied to electrification: a battery-electric car uses several times the copper of a petrol one, most of it in windings and wiring.

22 is the atomic number of titanium, which is as strong as many steels at roughly half the weight and resists corrosion well enough for seawater and the human body. That combination puts it in aircraft, ship fittings and joint replacements.

Catch-22 gave English a term for a rule whose conditions are mutually exclusive. Heller originally numbered it 18, and it was changed to avoid clashing with another novel published that year.

'Catch-22' — the title of Joseph Heller's 1961 novel — has entered everyday English as an idiom for a no-win, paradoxical situation.

There are 22 yards between the wickets on a cricket pitch (worldwide, ICC). One chain, a surveyor's unit of the era in which the laws were written — the same chain that makes an acre ten square chains and a furlong ten chains.

Eleven a side makes 22, a figure fixed by the 1863 English FA laws when much else about the game was not. The number is stable enough that 'twenty-two players' works as shorthand for the sport itself in a way no other team-count does.

Western numerology assigns twenty-two the status of a master number, often called the master builder. Eleven, twenty-two and thirty-three are the usual set, though some practitioners extend it to forty-four and beyond. The extension is disputed within the practice itself. This is a modern popular interpretation, not a historical or doctrinal claim.

Presented as belief or tradition, not as an established fact.