Fatto generale: 10947 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 10947 is an uninteresting number.
Trivia: 10947 is an unremarkable number.
Data storica: December 20th is the day in 1973 that the Spanish Prime Minister, Admiral Luis Carrero Blanco, is assassinated by a car bomb attack in Madrid.