1002221019979 has 2 divisors, whose sum is σ = 1002221019980. Its totient is φ = 1002221019978.

The previous prime is 1002221019959. The next prime is 1002221020027. The reversal of 1002221019979 is 9799101222001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1002221019979 - 2¹³ = 1002221011787 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002221019929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501110509989 + 501110509990.

It is an arithmetic number, because the mean of its divisors is an integer number (501110509990).

Almost surely, 2^{1002221019979} is an apocalyptic number.

1002221019979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002221019979 is an equidigital number, since it uses as much as digits as its factorization.

1002221019979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 43.

The spelling of 1002221019979 in words is "one trillion, two billion, two hundred twenty-one million, nineteen thousand, nine hundred seventy-nine".