101200009979 has 2 divisors, whose sum is σ = 101200009980. Its totient is φ = 101200009978.

The previous prime is 101200009969. The next prime is 101200010017. The reversal of 101200009979 is 979900002101.

It is an a-pointer prime, because the next prime (101200010017) can be obtained adding 101200009979 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101200009979 - 2²⁴ = 101183232763 is a prime.

It is not a weakly prime, because it can be changed into another prime (101200009969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50600004989 + 50600004990.

It is an arithmetic number, because the mean of its divisors is an integer number (50600004990).

Almost surely, 2^101200009979 is an apocalyptic number.

101200009979 is a deficient number, since it is larger than the sum of its proper divisors (1).

101200009979 is an equidigital number, since it uses as much as digits as its factorization.

101200009979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 38.

The spelling of 101200009979 in words is "one hundred one billion, two hundred million, nine thousand, nine hundred seventy-nine".