231301322122421 has 16 divisors (see below), whose sum is σ = 239324981575680. Its totient is φ = 223312886714160.

The previous prime is 231301322122391. The next prime is 231301322122441. The reversal of 231301322122421 is 124221223103132.

It is a cyclic number.

It is not a de Polignac number, because 231301322122421 - 2³⁸ = 231026444215477 is a prime.

It is a super-2 number, since 2×231301322122421² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231301322122441) 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, 177670166 + ... + 178967288.

It is an arithmetic number, because the mean of its divisors is an integer number (14957811348480).

Almost surely, 2^{231301322122421} is an apocalyptic number.

It is an amenable number.

231301322122421 is a deficient number, since it is larger than the sum of its proper divisors (8023659453259).

231301322122421 is a wasteful number, since it uses less digits than its factorization.

231301322122421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310696.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 231301322122421 its reverse (124221223103132), we get a palindrome (355522545225553).

The spelling of 231301322122421 in words is "two hundred thirty-one trillion, three hundred one billion, three hundred twenty-two million, one hundred twenty-two thousand, four hundred twenty-one".