Fait général: 21705 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 21705 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 21705 is a boring number.
Date historique: June 4th is the day in 1989 that Ali Khamenei is elected the new Supreme Leader of Islamic republic of Iran by the Assembly of Experts after the death of Ayatollah Ruhollah Khomeini.