100221125057 has 2 divisors, whose sum is σ = 100221125058. Its totient is φ = 100221125056.

The previous prime is 100221125021. The next prime is 100221125063. The reversal of 100221125057 is 750521122001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76020966961 + 24200158096 = 275719^2 + 155564^2 .

It is a cyclic number.

It is not a de Polignac number, because 100221125057 - 2²² = 100216930753 is a prime.

It is not a weakly prime, because it can be changed into another prime (100221121057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50110562528 + 50110562529.

It is an arithmetic number, because the mean of its divisors is an integer number (50110562529).

Almost surely, 2^100221125057 is an apocalyptic number.

It is an amenable number.

100221125057 is a deficient number, since it is larger than the sum of its proper divisors (1).

100221125057 is an equidigital number, since it uses as much as digits as its factorization.

100221125057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 26.

Adding to 100221125057 its reverse (750521122001), we get a palindrome (850742247058).

The spelling of 100221125057 in words is "one hundred billion, two hundred twenty-one million, one hundred twenty-five thousand, fifty-seven".