251113214212 has 24 divisors (see below), whose sum is σ = 509106246656. Its totient is φ = 106145702208.

The previous prime is 251113214189. The next prime is 251113214227. The reversal of 251113214212 is 212412311152.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61424868 + ... + 61428955.

Almost surely, 2^251113214212 is an apocalyptic number.

It is an amenable number.

251113214212 is an abundant number, since it is smaller than the sum of its proper divisors (257993032444).

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

251113214212 is a wasteful number, since it uses less digits than its factorization.

251113214212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122853907 (or 122853905 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

Adding to 251113214212 its reverse (212412311152), we get a palindrome (463525525364).

It can be divided in two parts, 25111 and 3214212, that added together give a palindrome (3239323).

The spelling of 251113214212 in words is "two hundred fifty-one billion, one hundred thirteen million, two hundred fourteen thousand, two hundred twelve".