100102020979 has 2 divisors, whose sum is σ = 100102020980. Its totient is φ = 100102020978.

The previous prime is 100102020929. The next prime is 100102021031. The reversal of 100102020979 is 979020201001.

It is a weak prime.

It is an emirp because it is prime and its reverse (979020201001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100102020979 - 2²⁹ = 99565150067 is a prime.

It is a super-2 number, since 2×100102020979² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100102020979.

It is not a weakly prime, because it can be changed into another prime (100102020929) 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, 50051010489 + 50051010490.

It is an arithmetic number, because the mean of its divisors is an integer number (50051010490).

Almost surely, 2^100102020979 is an apocalyptic number.

100102020979 is a deficient number, since it is larger than the sum of its proper divisors (1).

100102020979 is an equidigital number, since it uses as much as digits as its factorization.

100102020979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 31.

The spelling of 100102020979 in words is "one hundred billion, one hundred two million, twenty thousand, nine hundred seventy-nine".