102128422057 has 2 divisors, whose sum is σ = 102128422058. Its totient is φ = 102128422056.

The previous prime is 102128422031. The next prime is 102128422079. The reversal of 102128422057 is 750224821201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101411039401 + 717382656 = 318451^2 + 26784^2 .

It is a cyclic number.

It is not a de Polignac number, because 102128422057 - 2⁷ = 102128421929 is a prime.

It is a super-2 number, since 2×102128422057² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102128422087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51064211028 + 51064211029.

It is an arithmetic number, because the mean of its divisors is an integer number (51064211029).

Almost surely, 2^102128422057 is an apocalyptic number.

It is an amenable number.

102128422057 is a deficient number, since it is larger than the sum of its proper divisors (1).

102128422057 is an equidigital number, since it uses as much as digits as its factorization.

102128422057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17920, while the sum is 34.

The spelling of 102128422057 in words is "one hundred two billion, one hundred twenty-eight million, four hundred twenty-two thousand, fifty-seven".