252131520122 has 8 divisors (see below), whose sum is σ = 378245610900. Its totient is φ = 126049649824.

The previous prime is 252131520107. The next prime is 252131520143. The reversal of 252131520122 is 221025131252.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 248810418481 + 3321101641 = 498809^2 + 57629^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 252131520091 and 252131520100.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8035547 + ... + 8066862.

Almost surely, 2^252131520122 is an apocalyptic number.

252131520122 is a deficient number, since it is larger than the sum of its proper divisors (126114090778).

252131520122 is a wasteful number, since it uses less digits than its factorization.

252131520122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16110240.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 252131520122 its reverse (221025131252), we get a palindrome (473156651374).

The spelling of 252131520122 in words is "two hundred fifty-two billion, one hundred thirty-one million, five hundred twenty thousand, one hundred twenty-two".