111012132231 has 120 divisors (see below), whose sum is σ = 226633985424. Its totient is φ = 53232318720.

The previous prime is 111012132229. The next prime is 111012132247. The reversal of 111012132231 is 132231210111.

It is not a de Polignac number, because 111012132231 - 2¹ = 111012132229 is a prime.

It is a super-2 number, since 2×111012132231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012132131) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 469771 + ... + 665363.

Almost surely, 2^111012132231 is an apocalyptic number.

111012132231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111012132231 is an abundant number, since it is smaller than the sum of its proper divisors (115621853193).

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

111012132231 is a wasteful number, since it uses less digits than its factorization.

111012132231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195643 (or 195627 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 111012132231 its reverse (132231210111), we get a palindrome (243243342342).

The spelling of 111012132231 in words is "one hundred eleven billion, twelve million, one hundred thirty-two thousand, two hundred thirty-one".