123112202112102 has 32 divisors (see below), whose sum is σ = 281399840064000. Its totient is φ = 35174849770368.

The previous prime is 123112202112083. The next prime is 123112202112127. The reversal of 123112202112102 is 201211202211321.

It is a super-2 number, since 2×123112202112102² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23142399 + ... + 27960597.

It is an arithmetic number, because the mean of its divisors is an integer number (8793745002000).

Almost surely, 2^{123112202112102} is an apocalyptic number.

123112202112102 is an abundant number, since it is smaller than the sum of its proper divisors (158287637951898).

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

123112202112102 is a wasteful number, since it uses less digits than its factorization.

123112202112102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5426580.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 123112202112102 its reverse (201211202211321), we get a palindrome (324323404323423).

The spelling of 123112202112102 in words is "one hundred twenty-three trillion, one hundred twelve billion, two hundred two million, one hundred twelve thousand, one hundred two".