231545512223122 has 32 divisors (see below), whose sum is σ = 365389548054912. Its totient is φ = 109832949308544.

The previous prime is 231545512223071. The next prime is 231545512223159. The reversal of 231545512223122 is 221322215545132.

It is a super-2 number, since 2×231545512223122² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9281533 + ... + 23435824.

It is an arithmetic number, because the mean of its divisors is an integer number (11418423376716).

Almost surely, 2^{231545512223122} is an apocalyptic number.

231545512223122 is a deficient number, since it is larger than the sum of its proper divisors (133844035831790).

231545512223122 is a wasteful number, since it uses less digits than its factorization.

231545512223122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32718642.

The product of its digits is 288000, while the sum is 40.

Adding to 231545512223122 its reverse (221322215545132), we get a palindrome (452867727768254).

The spelling of 231545512223122 in words is "two hundred thirty-one trillion, five hundred forty-five billion, five hundred twelve million, two hundred twenty-three thousand, one hundred twenty-two".