10020120009979 has 2 divisors, whose sum is σ = 10020120009980. Its totient is φ = 10020120009978.

The previous prime is 10020120009953. The next prime is 10020120009983. The reversal of 10020120009979 is 97990002102001.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (97990002102001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10020120009979 - 2⁹ = 10020120009467 is a prime.

It is not a weakly prime, because it can be changed into another prime (10020120003979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010060004989 + 5010060004990.

It is an arithmetic number, because the mean of its divisors is an integer number (5010060004990).

Almost surely, 2^{10020120009979} is an apocalyptic number.

10020120009979 is a deficient number, since it is larger than the sum of its proper divisors (1).

10020120009979 is an equidigital number, since it uses as much as digits as its factorization.

10020120009979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 40.

The spelling of 10020120009979 in words is "ten trillion, twenty billion, one hundred twenty million, nine thousand, nine hundred seventy-nine".