10021420979 has 2 divisors, whose sum is σ = 10021420980. Its totient is φ = 10021420978.

The previous prime is 10021420963. The next prime is 10021421041. The reversal of 10021420979 is 97902412001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10021420979 - 2⁴ = 10021420963 is a prime.

It is a super-3 number, since 3×10021420979³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (10021420679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010710489 + 5010710490.

It is an arithmetic number, because the mean of its divisors is an integer number (5010710490).

Almost surely, 2^10021420979 is an apocalyptic number.

10021420979 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021420979 is an equidigital number, since it uses as much as digits as its factorization.

10021420979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The spelling of 10021420979 in words is "ten billion, twenty-one million, four hundred twenty thousand, nine hundred seventy-nine".