251121141010 has 16 divisors (see below), whose sum is σ = 467604883800. Its totient is φ = 96984716416.

The previous prime is 251121140999. The next prime is 251121141023. The reversal of 251121141010 is 10141121152.

It can be written as a sum of positive squares in 4 ways, for example, as 164445659361 + 86675481649 = 405519^2 + 294407^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432967195 + ... + 432967774.

Almost surely, 2^251121141010 is an apocalyptic number.

251121141010 is a deficient number, since it is larger than the sum of its proper divisors (216483742790).

251121141010 is a wasteful number, since it uses less digits than its factorization.

251121141010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865935005.

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 251121141010 its reverse (10141121152), we get a palindrome (261262262162).

The spelling of 251121141010 in words is "two hundred fifty-one billion, one hundred twenty-one million, one hundred forty-one thousand, ten".