123220323132021 has 24 divisors (see below), whose sum is σ = 187999066002176. Its totient is φ = 77648215619520.

The previous prime is 123220323131993. The next prime is 123220323132031. The reversal of 123220323132021 is 120231323022321.

123220323132021 is a `hidden beast` number, since 1 + 2 + 3 + 220 + 3 + 231 + 3 + 202 + 1 = 666.

It is not a de Polignac number, because 123220323132021 - 2³⁹ = 122670567318133 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 (123220323132031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5135452000 + ... + 5135475993.

Almost surely, 2^{123220323132021} is an apocalyptic number.

It is an amenable number.

123220323132021 is a deficient number, since it is larger than the sum of its proper divisors (64778742870155).

123220323132021 is a wasteful number, since it uses less digits than its factorization.

123220323132021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10270928073 (or 10270928070 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 123220323132021 its reverse (120231323022321), we get a palindrome (243451646154342).

The spelling of 123220323132021 in words is "one hundred twenty-three trillion, two hundred twenty billion, three hundred twenty-three million, one hundred thirty-two thousand, twenty-one".