1001012020999 has 2 divisors, whose sum is σ = 1001012021000. Its totient is φ = 1001012020998.

The previous prime is 1001012020997. The next prime is 1001012021021. The reversal of 1001012020999 is 9990202101001.

1001012020999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001012020999 - 2¹ = 1001012020997 is a prime.

Together with 1001012020997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001012020993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500506010499 + 500506010500.

It is an arithmetic number, because the mean of its divisors is an integer number (500506010500).

Almost surely, 2^{1001012020999} is an apocalyptic number.

1001012020999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001012020999 is an equidigital number, since it uses as much as digits as its factorization.

1001012020999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 34.

The spelling of 1001012020999 in words is "one trillion, one billion, twelve million, twenty thousand, nine hundred ninety-nine".