Fatto generale: 21241 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 21241 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 21241 is an unremarkable number.
Data storica: February 25th is the day in 1948 that the Communist Party takes control of government in Czechoslovakia and the period of the Third Republic ends.