It is a self number, because there is not a number n which added to its sum of digits gives 11001111100912.
It is a congruent number.
Almost surely, 211001111100912 is an apocalyptic number.
It is an amenable number.
11001111100912 is a wasteful number, since it uses less digits than its factorization.
11001111100912 is an evil number, because the sum of its binary digits is even.
Adding to 11001111100912 its reverse (21900111110011), we get a palindrome (32901222210923).
The spelling of 11001111100912 in words is "eleven trillion, one billion, one hundred eleven million, one hundred thousand, nine hundred twelve".