10020120120999 has 40 divisors (see below), whose sum is σ = 15964502545728. Its totient is φ = 6241242585600.

The previous prime is 10020120120977. The next prime is 10020120121027. The reversal of 10020120120999 is 99902102102001.

It is not a de Polignac number, because 10020120120999 - 2⁹ = 10020120120487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020120125999) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 26368927 + ... + 26746224.

Almost surely, 2^{10020120120999} is an apocalyptic number.

10020120120999 is a deficient number, since it is larger than the sum of its proper divisors (5944382424729).

10020120120999 is a wasteful number, since it uses less digits than its factorization.

10020120120999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53115317 (or 53115308 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The spelling of 10020120120999 in words is "ten trillion, twenty billion, one hundred twenty million, one hundred twenty thousand, nine hundred ninety-nine".