252335360021 has 2 divisors, whose sum is σ = 252335360022. Its totient is φ = 252335360020.

The previous prime is 252335359993. The next prime is 252335360047. The reversal of 252335360021 is 120063533252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137830275025 + 114505084996 = 371255^2 + 338386^2 .

It is a cyclic number.

It is not a de Polignac number, because 252335360021 - 2⁶ = 252335359957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 252335360021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252335350021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126167680010 + 126167680011.

It is an arithmetic number, because the mean of its divisors is an integer number (126167680011).

Almost surely, 2^252335360021 is an apocalyptic number.

It is an amenable number.

252335360021 is a deficient number, since it is larger than the sum of its proper divisors (1).

252335360021 is an equidigital number, since it uses as much as digits as its factorization.

252335360021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 32.

Adding to 252335360021 its reverse (120063533252), we get a palindrome (372398893273).

The spelling of 252335360021 in words is "two hundred fifty-two billion, three hundred thirty-five million, three hundred sixty thousand, twenty-one".