122542553231 has 24 divisors (see below), whose sum is σ = 146453600160. Its totient is φ = 100434571776.

The previous prime is 122542553219. The next prime is 122542553239. The reversal of 122542553231 is 132355245221.

It is not a de Polignac number, because 122542553231 - 2¹⁰ = 122542552207 is a prime.

It is a super-2 number, since 2×122542553231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122542553191 and 122542553200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122542553239) 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, 19285751 + ... + 19292103.

It is an arithmetic number, because the mean of its divisors is an integer number (6102233340).

Almost surely, 2^122542553231 is an apocalyptic number.

122542553231 is a deficient number, since it is larger than the sum of its proper divisors (23911046929).

122542553231 is an equidigital number, since it uses as much as digits as its factorization.

122542553231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11615 (or 11592 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

Adding to 122542553231 its reverse (132355245221), we get a palindrome (254897798452).

The spelling of 122542553231 in words is "one hundred twenty-two billion, five hundred forty-two million, five hundred fifty-three thousand, two hundred thirty-one".