100102020201979 has 2 divisors, whose sum is σ = 100102020201980. Its totient is φ = 100102020201978.

The previous prime is 100102020201947. The next prime is 100102020202081. The reversal of 100102020201979 is 979102020201001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100102020201979 - 2⁵ = 100102020201947 is a prime.

It is not a weakly prime, because it can be changed into another prime (100108020201979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50051010100989 + 50051010100990.

It is an arithmetic number, because the mean of its divisors is an integer number (50051010100990).

Almost surely, 2^{100102020201979} is an apocalyptic number.

100102020201979 is a deficient number, since it is larger than the sum of its proper divisors (1).

100102020201979 is an equidigital number, since it uses as much as digits as its factorization.

100102020201979 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 100102020201979 in words is "one hundred trillion, one hundred two billion, twenty million, two hundred one thousand, nine hundred seventy-nine".