252099445121 has 2 divisors, whose sum is σ = 252099445122. Its totient is φ = 252099445120.

The previous prime is 252099445027. The next prime is 252099445139. The reversal of 252099445121 is 121544990252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225420796225 + 26678648896 = 474785^2 + 163336^2 .

It is a cyclic number.

It is not a de Polignac number, because 252099445121 - 2¹⁸ = 252099182977 is a prime.

It is not a weakly prime, because it can be changed into another prime (252099405121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126049722560 + 126049722561.

It is an arithmetic number, because the mean of its divisors is an integer number (126049722561).

Almost surely, 2^252099445121 is an apocalyptic number.

It is an amenable number.

252099445121 is a deficient number, since it is larger than the sum of its proper divisors (1).

252099445121 is an equidigital number, since it uses as much as digits as its factorization.

252099445121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 252099445121 in words is "two hundred fifty-two billion, ninety-nine million, four hundred forty-five thousand, one hundred twenty-one".