123112031221102 has 128 divisors (see below), whose sum is σ = 244198654672896. Its totient is φ = 45150799680000.

The previous prime is 123112031221093. The next prime is 123112031221147. The reversal of 123112031221102 is 201122130211321.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 48228727 + ... + 50717197.

It is an arithmetic number, because the mean of its divisors is an integer number (1907801989632).

Almost surely, 2^{123112031221102} is an apocalyptic number.

123112031221102 is a deficient number, since it is larger than the sum of its proper divisors (121086623451794).

123112031221102 is a wasteful number, since it uses less digits than its factorization.

123112031221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488806.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 123112031221102 its reverse (201122130211321), we get a palindrome (324234161432423).

The spelling of 123112031221102 in words is "one hundred twenty-three trillion, one hundred twelve billion, thirty-one million, two hundred twenty-one thousand, one hundred two".