102202189 has 2 divisors, whose sum is σ = 102202190. Its totient is φ = 102202188.

The previous prime is 102202183. The next prime is 102202201. The reversal of 102202189 is 981202201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51194025 + 51008164 = 7155^2 + 7142^2 .

It is a cyclic number.

It is not a de Polignac number, because 102202189 - 2⁹ = 102201677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102202183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51101094 + 51101095.

It is an arithmetic number, because the mean of its divisors is an integer number (51101095).

Almost surely, 2^102202189 is an apocalyptic number.

It is an amenable number.

102202189 is a deficient number, since it is larger than the sum of its proper divisors (1).

102202189 is an equidigital number, since it uses as much as digits as its factorization.

102202189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 102202189 is about 10109.5098298582. The cubic root of 102202189 is about 467.5413924287.

The spelling of 102202189 in words is "one hundred two million, two hundred two thousand, one hundred eighty-nine".