111122012012 has 96 divisors (see below), whose sum is σ = 225375548160. Its totient is φ = 47410272000.

The previous prime is 111122012009. The next prime is 111122012033. The reversal of 111122012012 is 210210221111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55256087 + ... + 55258097.

It is an arithmetic number, because the mean of its divisors is an integer number (2347661960).

Almost surely, 2^111122012012 is an apocalyptic number.

It is an amenable number.

111122012012 is an abundant number, since it is smaller than the sum of its proper divisors (114253536148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111122012012 is a wasteful number, since it uses less digits than its factorization.

111122012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2623 (or 2621 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111122012012 its reverse (210210221111), we get a palindrome (321332233123).

The spelling of 111122012012 in words is "one hundred eleven billion, one hundred twenty-two million, twelve thousand, twelve".