123111012202113 has 32 divisors (see below), whose sum is σ = 178342803022720. Its totient is φ = 75090429734400.

The previous prime is 123111012202103. The next prime is 123111012202117. The reversal of 123111012202113 is 311202210111321.

It is not a de Polignac number, because 123111012202113 - 2²⁴ = 123110995424897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123111012202113.

It is not an unprimeable number, because it can be changed into a prime (123111012202117) 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, 15635506 + ... + 22151547.

It is an arithmetic number, because the mean of its divisors is an integer number (5573212594460).

Almost surely, 2^{123111012202113} is an apocalyptic number.

123111012202113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123111012202113 is a deficient number, since it is larger than the sum of its proper divisors (55231790820607).

123111012202113 is a wasteful number, since it uses less digits than its factorization.

123111012202113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37787809.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 123111012202113 its reverse (311202210111321), we get a palindrome (434313222313434).

The spelling of 123111012202113 in words is "one hundred twenty-three trillion, one hundred eleven billion, twelve million, two hundred two thousand, one hundred thirteen".