121013331010021 has 16 divisors (see below), whose sum is σ = 125469279226368. Its totient is φ = 116635827571200.

The previous prime is 121013331009983. The next prime is 121013331010097. The reversal of 121013331010021 is 120010133310121.

It is a cyclic number.

It is not a de Polignac number, because 121013331010021 - 2²¹ = 121013328912869 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 (121013331010321) 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, 41118165 + ... + 43962826.

It is an arithmetic number, because the mean of its divisors is an integer number (7841829951648).

Almost surely, 2^{121013331010021} is an apocalyptic number.

It is an amenable number.

121013331010021 is a deficient number, since it is larger than the sum of its proper divisors (4455948216347).

121013331010021 is a wasteful number, since it uses less digits than its factorization.

121013331010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85081452.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 121013331010021 its reverse (120010133310121), we get a palindrome (241023464320142).

It can be divided in two parts, 1210133310100 and 21, that added together give a palindrome (1210133310121).

The spelling of 121013331010021 in words is "one hundred twenty-one trillion, thirteen billion, three hundred thirty-one million, ten thousand, twenty-one".