123315331504221 has 24 divisors (see below), whose sum is σ = 183868804011776. Its totient is φ = 79557939659520.

The previous prime is 123315331504217. The next prime is 123315331504243. The reversal of 123315331504221 is 122405133513321.

123315331504221 is a `hidden beast` number, since 1 + 2 + 3 + 3 + 153 + 31 + 50 + 422 + 1 = 666.

It is not a de Polignac number, because 123315331504221 - 2² = 123315331504217 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 (123315331502221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75944781 + ... + 77551533.

Almost surely, 2^{123315331504221} is an apocalyptic number.

It is an amenable number.

123315331504221 is a deficient number, since it is larger than the sum of its proper divisors (60553472507555).

123315331504221 is a wasteful number, since it uses less digits than its factorization.

123315331504221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881873 (or 1881870 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 123315331504221 in words is "one hundred twenty-three trillion, three hundred fifteen billion, three hundred thirty-one million, five hundred four thousand, two hundred twenty-one".