General fact: 21059 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 21059 is a boring number.
Trivia: 21059 is an uninteresting number.
Historical date: August 27th is the day in 2009 that the Burmese military junta and ethnic armies begin three days of violent clashes in the Kokang Special Region.