11111022212012 has 12 divisors (see below), whose sum is σ = 19444517337336. Its totient is φ = 5555445829920.

The previous prime is 11111022211979. The next prime is 11111022212039. The reversal of 11111022212012 is 21021222011111.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15935033 + ... + 16617680.

It is an arithmetic number, because the mean of its divisors is an integer number (1620376444778).

Almost surely, 2^{11111022212012} is an apocalyptic number.

It is an amenable number.

11111022212012 is a deficient number, since it is larger than the sum of its proper divisors (8333495125324).

11111022212012 is a wasteful number, since it uses less digits than its factorization.

11111022212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32638048 (or 32638046 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11111022212012 its reverse (21021222011111), we get a palindrome (32132244223123).

The spelling of 11111022212012 in words is "eleven trillion, one hundred eleven billion, twenty-two million, two hundred twelve thousand, twelve".