10102021020979 has 2 divisors, whose sum is σ = 10102021020980. Its totient is φ = 10102021020978.

The previous prime is 10102021020953. The next prime is 10102021021013. The reversal of 10102021020979 is 97902012020101.

It is a happy number.

It is an a-pointer prime, because the next prime (10102021021013) can be obtained adding 10102021020979 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10102021020979 - 2⁹ = 10102021020467 is a prime.

It is not a weakly prime, because it can be changed into another prime (10102021030979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5051010510489 + 5051010510490.

It is an arithmetic number, because the mean of its divisors is an integer number (5051010510490).

Almost surely, 2^{10102021020979} is an apocalyptic number.

10102021020979 is a deficient number, since it is larger than the sum of its proper divisors (1).

10102021020979 is an equidigital number, since it uses as much as digits as its factorization.

10102021020979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 34.

The spelling of 10102021020979 in words is "ten trillion, one hundred two billion, twenty-one million, twenty thousand, nine hundred seventy-nine".