102022221209 has 2 divisors, whose sum is σ = 102022221210. Its totient is φ = 102022221208.

The previous prime is 102022221143. The next prime is 102022221239. The reversal of 102022221209 is 902122220201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55588435984 + 46433785225 = 235772^2 + 215485^2 .

It is a cyclic number.

It is not a de Polignac number, because 102022221209 - 2⁸ = 102022220953 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (102022221239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51011110604 + 51011110605.

It is an arithmetic number, because the mean of its divisors is an integer number (51011110605).

Almost surely, 2^102022221209 is an apocalyptic number.

It is an amenable number.

102022221209 is a deficient number, since it is larger than the sum of its proper divisors (1).

102022221209 is an equidigital number, since it uses as much as digits as its factorization.

102022221209 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 23.

The spelling of 102022221209 in words is "one hundred two billion, twenty-two million, two hundred twenty-one thousand, two hundred nine".