101200999979 has 2 divisors, whose sum is σ = 101200999980. Its totient is φ = 101200999978.

The previous prime is 101200999973. The next prime is 101201000039. The reversal of 101200999979 is 979999002101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101200999979 is a prime.

It is not a weakly prime, because it can be changed into another prime (101200999973) 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, 50600499989 + 50600499990.

It is an arithmetic number, because the mean of its divisors is an integer number (50600499990).

Almost surely, 2^101200999979 is an apocalyptic number.

101200999979 is a deficient number, since it is larger than the sum of its proper divisors (1).

101200999979 is an equidigital number, since it uses as much as digits as its factorization.

101200999979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 826686, while the sum is 56.

The spelling of 101200999979 in words is "one hundred one billion, two hundred million, nine hundred ninety-nine thousand, nine hundred seventy-nine".