111231211211032 has 32 divisors (see below), whose sum is σ = 227522173089600. Its totient is φ = 50558800010400.

The previous prime is 111231211211017. The next prime is 111231211211117. The reversal of 111231211211032 is 230112112132111.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 111231211210994 and 111231211211012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5185194 + ... + 15790777.

It is an arithmetic number, because the mean of its divisors is an integer number (7110067909050).

Almost surely, 2^{111231211211032} is an apocalyptic number.

It is an amenable number.

111231211211032 is an abundant number, since it is smaller than the sum of its proper divisors (116290961878568).

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

111231211211032 is a wasteful number, since it uses less digits than its factorization.

111231211211032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21036247 (or 21036243 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 111231211211032 its reverse (230112112132111), we get a palindrome (341343323343143).

The spelling of 111231211211032 in words is "one hundred eleven trillion, two hundred thirty-one billion, two hundred eleven million, two hundred eleven thousand, thirty-two".