102220897 has 2 divisors, whose sum is σ = 102220898. Its totient is φ = 102220896.

The previous prime is 102220889. The next prime is 102220957. The reversal of 102220897 is 798022201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74805201 + 27415696 = 8649^2 + 5236^2 .

It is a cyclic number.

It is not a de Polignac number, because 102220897 - 2³ = 102220889 is a prime.

It is a super-2 number, since 2×102220897² = 20898223566969218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102220297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110448 + 51110449.

It is an arithmetic number, because the mean of its divisors is an integer number (51110449).

Almost surely, 2^102220897 is an apocalyptic number.

It is an amenable number.

102220897 is a deficient number, since it is larger than the sum of its proper divisors (1).

102220897 is an equidigital number, since it uses as much as digits as its factorization.

102220897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 102220897 is about 10110.4350549321. The cubic root of 102220897 is about 467.5699183367.

The spelling of 102220897 in words is "one hundred two million, two hundred twenty thousand, eight hundred ninety-seven".