1021122001979 has 2 divisors, whose sum is σ = 1021122001980. Its totient is φ = 1021122001978.

The previous prime is 1021122001849. The next prime is 1021122001987. The reversal of 1021122001979 is 9791002211201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1021122001979 - 2³² = 1016827034683 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1021122001379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510561000989 + 510561000990.

It is an arithmetic number, because the mean of its divisors is an integer number (510561000990).

Almost surely, 2^{1021122001979} is an apocalyptic number.

1021122001979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021122001979 is an equidigital number, since it uses as much as digits as its factorization.

1021122001979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 35.

The spelling of 1021122001979 in words is "one trillion, twenty-one billion, one hundred twenty-two million, one thousand, nine hundred seventy-nine".