1021001200979 has 2 divisors, whose sum is σ = 1021001200980. Its totient is φ = 1021001200978.

The previous prime is 1021001200951. The next prime is 1021001201021. The reversal of 1021001200979 is 9790021001201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021001200979 - 2¹⁶ = 1021001135443 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021001200279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510500600489 + 510500600490.

It is an arithmetic number, because the mean of its divisors is an integer number (510500600490).

Almost surely, 2^{1021001200979} is an apocalyptic number.

1021001200979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021001200979 is an equidigital number, since it uses as much as digits as its factorization.

1021001200979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 32.

The spelling of 1021001200979 in words is "one trillion, twenty-one billion, one million, two hundred thousand, nine hundred seventy-nine".