102220202257 has 2 divisors, whose sum is σ = 102220202258. Its totient is φ = 102220202256.

The previous prime is 102220202209. The next prime is 102220202261. The reversal of 102220202257 is 752202022201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58932903121 + 43287299136 = 242761^2 + 208056^2 .

It is a cyclic number.

It is not a de Polignac number, because 102220202257 - 2¹⁵ = 102220169489 is a prime.

It is not a weakly prime, because it can be changed into another prime (102220202267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110101128 + 51110101129.

It is an arithmetic number, because the mean of its divisors is an integer number (51110101129).

Almost surely, 2^102220202257 is an apocalyptic number.

It is an amenable number.

102220202257 is a deficient number, since it is larger than the sum of its proper divisors (1).

102220202257 is an equidigital number, since it uses as much as digits as its factorization.

102220202257 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 25.

Adding to 102220202257 its reverse (752202022201), we get a palindrome (854422224458).

The spelling of 102220202257 in words is "one hundred two billion, two hundred twenty million, two hundred two thousand, two hundred fifty-seven".