251156332252122 has 16 divisors (see below), whose sum is σ = 547977452186592. Its totient is φ = 76107979470320.

The previous prime is 251156332252109. The next prime is 251156332252279. The reversal of 251156332252122 is 221252233651152.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1902699486693 + ... + 1902699486824.

It is an arithmetic number, because the mean of its divisors is an integer number (34248590761662).

Almost surely, 2^{251156332252122} is an apocalyptic number.

251156332252122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

251156332252122 is an abundant number, since it is smaller than the sum of its proper divisors (296821119934470).

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

251156332252122 is a wasteful number, since it uses less digits than its factorization.

251156332252122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3805398973533.

The product of its digits is 432000, while the sum is 42.

The spelling of 251156332252122 in words is "two hundred fifty-one trillion, one hundred fifty-six billion, three hundred thirty-two million, two hundred fifty-two thousand, one hundred twenty-two".