101210001979 has 2 divisors, whose sum is σ = 101210001980. Its totient is φ = 101210001978.

The previous prime is 101210001887. The next prime is 101210002031. The reversal of 101210001979 is 979100012101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101210001979 - 2³³ = 92620067387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101210001979.

It is not a weakly prime, because it can be changed into another prime (101210001779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605000989 + 50605000990.

It is an arithmetic number, because the mean of its divisors is an integer number (50605000990).

Almost surely, 2^101210001979 is an apocalyptic number.

101210001979 is a deficient number, since it is larger than the sum of its proper divisors (1).

101210001979 is an equidigital number, since it uses as much as digits as its factorization.

101210001979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 31.

The spelling of 101210001979 in words is "one hundred one billion, two hundred ten million, one thousand, nine hundred seventy-nine".