251121141023 has 2 divisors, whose sum is σ = 251121141024. Its totient is φ = 251121141022.

The previous prime is 251121140999. The next prime is 251121141149. The reversal of 251121141023 is 320141121152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 251121141023 - 2²² = 251116946719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 251121141023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251121141823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125560570511 + 125560570512.

It is an arithmetic number, because the mean of its divisors is an integer number (125560570512).

Almost surely, 2^251121141023 is an apocalyptic number.

251121141023 is a deficient number, since it is larger than the sum of its proper divisors (1).

251121141023 is an equidigital number, since it uses as much as digits as its factorization.

251121141023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 251121141023 its reverse (320141121152), we get a palindrome (571262262175).

The spelling of 251121141023 in words is "two hundred fifty-one billion, one hundred twenty-one million, one hundred forty-one thousand, twenty-three".