123523103005021 has 16 divisors (see below), whose sum is σ = 125330477759424. Its totient is φ = 121723347867264.

The previous prime is 123523103005019. The next prime is 123523103005061. The reversal of 123523103005021 is 120500301325321.

It is a cyclic number.

It is not a de Polignac number, because 123523103005021 - 2¹ = 123523103005019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123523103005061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1525821481 + ... + 1525902433.

It is an arithmetic number, because the mean of its divisors is an integer number (7833154859964).

Almost surely, 2^{123523103005021} is an apocalyptic number.

It is an amenable number.

123523103005021 is a deficient number, since it is larger than the sum of its proper divisors (1807374754403).

123523103005021 is an equidigital number, since it uses as much as digits as its factorization.

123523103005021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127740.

The product of its (nonzero) digits is 5400, while the sum is 28.

The spelling of 123523103005021 in words is "one hundred twenty-three trillion, five hundred twenty-three billion, one hundred three million, five thousand, twenty-one".