111012201231 has 32 divisors (see below), whose sum is σ = 157597539840. Its totient is φ = 69375067776.

The previous prime is 111012201221. The next prime is 111012201277. The reversal of 111012201231 is 132102210111.

It is not a de Polignac number, because 111012201231 - 2²² = 111008006927 is a prime.

It is a super-2 number, since 2×111012201231² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111012201231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012201221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1466350 + ... + 1540196.

It is an arithmetic number, because the mean of its divisors is an integer number (4924923120).

Almost surely, 2^111012201231 is an apocalyptic number.

111012201231 is a deficient number, since it is larger than the sum of its proper divisors (46585338609).

111012201231 is a wasteful number, since it uses less digits than its factorization.

111012201231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74383.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 111012201231 its reverse (132102210111), we get a palindrome (243114411342).

The spelling of 111012201231 in words is "one hundred eleven billion, twelve million, two hundred one thousand, two hundred thirty-one".