Fatto generale: 21965 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 21965 is an uninteresting number.
Trivia: 21965 is an unremarkable number.
Data storica: February 19th is the day in 1959 that the United Kingdom grants Cyprus independence, which is then formally proclaimed on August 16, 1960.