111111122012 has 12 divisors (see below), whose sum is σ = 212121233016. Its totient is φ = 50505055440.

The previous prime is 111111121999. The next prime is 111111122071. The reversal of 111111122012 is 210221111111.

It is a congruent number.

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, 1262626343 + ... + 1262626430.

It is an arithmetic number, because the mean of its divisors is an integer number (17676769418).

Almost surely, 2^111111122012 is an apocalyptic number.

It is an amenable number.

111111122012 is a deficient number, since it is larger than the sum of its proper divisors (101010111004).

111111122012 is a wasteful number, since it uses less digits than its factorization.

111111122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525252788 (or 2525252786 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111111122012 its reverse (210221111111), we get a palindrome (321332233123).

The spelling of 111111122012 in words is "one hundred eleven billion, one hundred eleven million, one hundred twenty-two thousand, twelve".