100121228057 has 2 divisors, whose sum is σ = 100121228058. Its totient is φ = 100121228056.

The previous prime is 100121228047. The next prime is 100121228063. The reversal of 100121228057 is 750822121001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97706881561 + 2414346496 = 312581^2 + 49136^2 .

It is a cyclic number.

It is not a de Polignac number, because 100121228057 - 2³⁰ = 99047486233 is a prime.

It is not a weakly prime, because it can be changed into another prime (100121228047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060614028 + 50060614029.

It is an arithmetic number, because the mean of its divisors is an integer number (50060614029).

Almost surely, 2^100121228057 is an apocalyptic number.

It is an amenable number.

100121228057 is a deficient number, since it is larger than the sum of its proper divisors (1).

100121228057 is an equidigital number, since it uses as much as digits as its factorization.

100121228057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 29.

Adding to 100121228057 its reverse (750822121001), we get a palindrome (850943349058).

The spelling of 100121228057 in words is "one hundred billion, one hundred twenty-one million, two hundred twenty-eight thousand, fifty-seven".