252911575621121 has 2 divisors, whose sum is σ = 252911575621122. Its totient is φ = 252911575621120.

The previous prime is 252911575621037. The next prime is 252911575621213. The reversal of 252911575621121 is 121126575119252.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 252585414700096 + 326160921025 = 15892936^2 + 571105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252911575621121 is a prime.

It is a super-2 number, since 2×252911575621121² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 252911575621121.

It is not a weakly prime, because it can be changed into another prime (252911575621421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126455787810560 + 126455787810561.

It is an arithmetic number, because the mean of its divisors is an integer number (126455787810561).

Almost surely, 2^{252911575621121} is an apocalyptic number.

It is an amenable number.

252911575621121 is a deficient number, since it is larger than the sum of its proper divisors (1).

252911575621121 is an equidigital number, since it uses as much as digits as its factorization.

252911575621121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756000, while the sum is 50.

The spelling of 252911575621121 in words is "two hundred fifty-two trillion, nine hundred eleven billion, five hundred seventy-five million, six hundred twenty-one thousand, one hundred twenty-one".