121120023231 has 12 divisors (see below), whose sum is σ = 175070097280. Its totient is φ = 80691780960.

The previous prime is 121120023181. The next prime is 121120023259. The reversal of 121120023231 is 132320021121.

121120023231 is a `hidden beast` number, since 1 + 211 + 200 + 23 + 231 = 666.

It is not a de Polignac number, because 121120023231 - 2¹⁵ = 121119990463 is a prime.

It is a super-2 number, since 2×121120023231² (a number of 23 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 (121120023281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4561126 + ... + 4587603.

Almost surely, 2^121120023231 is an apocalyptic number.

121120023231 is a deficient number, since it is larger than the sum of its proper divisors (53950074049).

121120023231 is a wasteful number, since it uses less digits than its factorization.

121120023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9150206 (or 9150203 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121120023231 its reverse (132320021121), we get a palindrome (253440044352).

The spelling of 121120023231 in words is "one hundred twenty-one billion, one hundred twenty million, twenty-three thousand, two hundred thirty-one".