102225881 has 2 divisors, whose sum is σ = 102225882. Its totient is φ = 102225880.

The previous prime is 102225859. The next prime is 102225887. The reversal of 102225881 is 188522201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57456400 + 44769481 = 7580^2 + 6691^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102225881 is a prime.

It is a super-2 number, since 2×102225881² = 20900261492452322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102225887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51112940 + 51112941.

It is an arithmetic number, because the mean of its divisors is an integer number (51112941).

Almost surely, 2^102225881 is an apocalyptic number.

It is an amenable number.

102225881 is a deficient number, since it is larger than the sum of its proper divisors (1).

102225881 is an equidigital number, since it uses as much as digits as its factorization.

102225881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 102225881 is about 10110.6815299464. The cubic root of 102225881 is about 467.5775173394.

The spelling of 102225881 in words is "one hundred two million, two hundred twenty-five thousand, eight hundred eighty-one".