252013122 has 24 divisors (see below), whose sum is σ = 546556140. Its totient is φ = 83923200.

The previous prime is 252013061. The next prime is 252013129. The reversal of 252013122 is 221310252.

It can be written as a sum of positive squares in 2 ways, for example, as 228886641 + 23126481 = 15129^2 + 4809^2 .

It is a super-2 number, since 2×252013122² = 127021227320373768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 252013095 and 252013104.

It is not an unprimeable number, because it can be changed into a prime (252013129) 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, 14122 + ... + 26522.

Almost surely, 2^252013122 is an apocalyptic number.

252013122 is an abundant number, since it is smaller than the sum of its proper divisors (294543018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

252013122 is a wasteful number, since it uses less digits than its factorization.

252013122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13538 (or 13535 counting only the distinct ones).

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

The square root of 252013122 is about 15874.9211651586. The cubic root of 252013122 is about 631.6469229709.

Adding to 252013122 its reverse (221310252), we get a palindrome (473323374).

The spelling of 252013122 in words is "two hundred fifty-two million, thirteen thousand, one hundred twenty-two".