111113133012 has 36 divisors (see below), whose sum is σ = 320993496096. Its totient is φ = 31746609360.

The previous prime is 111113132987. The next prime is 111113133017. The reversal of 111113133012 is 210331311111.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×111113133012² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111113133017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220462314 + ... + 220462817.

Almost surely, 2^111113133012 is an apocalyptic number.

111113133012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111113133012 is an abundant number, since it is smaller than the sum of its proper divisors (209880363084).

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

111113133012 is a wasteful number, since it uses less digits than its factorization.

111113133012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440925148 (or 440925143 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 111113133012 its reverse (210331311111), we get a palindrome (321444444123).

The spelling of 111113133012 in words is "one hundred eleven billion, one hundred thirteen million, one hundred thirty-three thousand, twelve".