121631605224051 has 24 divisors (see below), whose sum is σ = 175830467767920. Its totient is φ = 74756303396736.

The previous prime is 121631605224043. The next prime is 121631605224061. The reversal of 121631605224051 is 150422506136121.

It is not a de Polignac number, because 121631605224051 - 2³ = 121631605224043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (121631605224061) 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, 150100656 + ... + 150908813.

It is an arithmetic number, because the mean of its divisors is an integer number (7326269490330).

Almost surely, 2^{121631605224051} is an apocalyptic number.

121631605224051 is a deficient number, since it is larger than the sum of its proper divisors (54198862543869).

121631605224051 is a wasteful number, since it uses less digits than its factorization.

121631605224051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301010295 (or 301010282 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 121631605224051 in words is "one hundred twenty-one trillion, six hundred thirty-one billion, six hundred five million, two hundred twenty-four thousand, fifty-one".