122520231 has 12 divisors (see below), whose sum is σ = 179214880. Its totient is φ = 80645760.

The previous prime is 122520193. The next prime is 122520247. The reversal of 122520231 is 132025221.

122520231 is a `hidden beast` number, since 122 + 520 + 23 + 1 = 666.

It is not a de Polignac number, because 122520231 - 2¹¹ = 122518183 is a prime.

It is a super-2 number, since 2×122520231² = 30022414008586722, which 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 (122520271) 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, 85450 + ... + 86871.

Almost surely, 2^122520231 is an apocalyptic number.

122520231 is a deficient number, since it is larger than the sum of its proper divisors (56694649).

122520231 is a wasteful number, since it uses less digits than its factorization.

122520231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172406 (or 172403 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 122520231 is about 11068.8857162770. The cubic root of 122520231 is about 496.6715331165.

Adding to 122520231 its reverse (132025221), we get a palindrome (254545452).

The spelling of 122520231 in words is "one hundred twenty-two million, five hundred twenty thousand, two hundred thirty-one".