251314014121 has 4 divisors (see below), whose sum is σ = 251486977732. Its totient is φ = 251141050512.

The previous prime is 251314014109. The next prime is 251314014137. The reversal of 251314014121 is 121410413152.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 129470432400 + 121843581721 = 359820^2 + 349061^2 .

It is a cyclic number.

It is not a de Polignac number, because 251314014121 - 2⁵ = 251314014089 is a prime.

It is a super-2 number, since 2×251314014121² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (251314014191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86479626 + ... + 86482531.

It is an arithmetic number, because the mean of its divisors is an integer number (62871744433).

Almost surely, 2^251314014121 is an apocalyptic number.

It is an amenable number.

251314014121 is a deficient number, since it is larger than the sum of its proper divisors (172963611).

251314014121 is a wasteful number, since it uses less digits than its factorization.

251314014121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172963610.

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

Adding to 251314014121 its reverse (121410413152), we get a palindrome (372724427273).

The spelling of 251314014121 in words is "two hundred fifty-one billion, three hundred fourteen million, fourteen thousand, one hundred twenty-one".