123103111312120 has 32 divisors (see below), whose sum is σ = 277019345329200. Its totient is φ = 49234605435648.

The previous prime is 123103111312087. The next prime is 123103111312187. The reversal of 123103111312120 is 21213111301321.

It is a junction number, because it is equal to n+sod(n) for n = 123103111312091 and 123103111312100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207171150 + ... + 207764509.

Almost surely, 2^{123103111312120} is an apocalyptic number.

123103111312120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123103111312120 is an abundant number, since it is smaller than the sum of its proper divisors (153916234017080).

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

123103111312120 is a wasteful number, since it uses less digits than its factorization.

123103111312120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414943087 (or 414943083 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 123103111312120 its reverse (21213111301321), we get a palindrome (144316222613441).

The spelling of 123103111312120 in words is "one hundred twenty-three trillion, one hundred three billion, one hundred eleven million, three hundred twelve thousand, one hundred twenty".