251000041122 has 48 divisors (see below), whose sum is σ = 549898352640. Its totient is φ = 82735668000.

The previous prime is 251000041087. The next prime is 251000041147. The reversal of 251000041122 is 221140000152.

251000041122 is a `hidden beast` number, since 251 + 0 + 0 + 0 + 0 + 411 + 2 + 2 = 666.

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 = 251000041095 and 251000041104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1389279 + ... + 1559517.

It is an arithmetic number, because the mean of its divisors is an integer number (11456215680).

Almost surely, 2^251000041122 is an apocalyptic number.

251000041122 is an abundant number, since it is smaller than the sum of its proper divisors (298898311518).

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

251000041122 is a wasteful number, since it uses less digits than its factorization.

251000041122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171159 (or 171156 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 251000041122 its reverse (221140000152), we get a palindrome (472140041274).

The spelling of 251000041122 in words is "two hundred fifty-one billion, forty-one thousand, one hundred twenty-two".