102021112057 has 2 divisors, whose sum is σ = 102021112058. Its totient is φ = 102021112056.

The previous prime is 102021112033. The next prime is 102021112117. The reversal of 102021112057 is 750211120201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99862952121 + 2158159936 = 316011^2 + 46456^2 .

It is a cyclic number.

It is not a de Polignac number, because 102021112057 - 2¹⁵ = 102021079289 is a prime.

It is not a weakly prime, because it can be changed into another prime (102021112027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010556028 + 51010556029.

It is an arithmetic number, because the mean of its divisors is an integer number (51010556029).

Almost surely, 2^102021112057 is an apocalyptic number.

It is an amenable number.

102021112057 is a deficient number, since it is larger than the sum of its proper divisors (1).

102021112057 is an equidigital number, since it uses as much as digits as its factorization.

102021112057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 22.

Adding to 102021112057 its reverse (750211120201), we get a palindrome (852232232258).

The spelling of 102021112057 in words is "one hundred two billion, twenty-one million, one hundred twelve thousand, fifty-seven".