1002001220999 has 2 divisors, whose sum is σ = 1002001221000. Its totient is φ = 1002001220998.

The previous prime is 1002001220939. The next prime is 1002001221007. The reversal of 1002001220999 is 9990221002001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002001220999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002001220939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501000610499 + 501000610500.

It is an arithmetic number, because the mean of its divisors is an integer number (501000610500).

Almost surely, 2^{1002001220999} is an apocalyptic number.

1002001220999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002001220999 is an equidigital number, since it uses as much as digits as its factorization.

1002001220999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 35.

The spelling of 1002001220999 in words is "one trillion, two billion, one million, two hundred twenty thousand, nine hundred ninety-nine".