102202011979 has 2 divisors, whose sum is σ = 102202011980. Its totient is φ = 102202011978.

The previous prime is 102202011949. The next prime is 102202011991. The reversal of 102202011979 is 979110202201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102202011979 - 2¹⁵ = 102201979211 is a prime.

It is not a weakly prime, because it can be changed into another prime (102202011949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51101005989 + 51101005990.

It is an arithmetic number, because the mean of its divisors is an integer number (51101005990).

Almost surely, 2^102202011979 is an apocalyptic number.

102202011979 is a deficient number, since it is larger than the sum of its proper divisors (1).

102202011979 is an equidigital number, since it uses as much as digits as its factorization.

102202011979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 34.

The spelling of 102202011979 in words is "one hundred two billion, two hundred two million, eleven thousand, nine hundred seventy-nine".