Fatto generale: 12086 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 12086 is a boring number.
Trivia: 12086 is an uninteresting number.
Data storica: February 1st is the day in 1968 that Canada's three military services, the Royal Canadian Navy, the Canadian Army and the Royal Canadian Air Force, are unified into the Canadian Forces.