20001022110999 has 12 divisors (see below), whose sum is σ = 29562234231816. Its totient is φ = 13023921374352.

The previous prime is 20001022110961. The next prime is 20001022111003. The reversal of 20001022110999 is 99901122010002.

It is not a de Polignac number, because 20001022110999 - 2¹³ = 20001022102807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001022111999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25841113452 + ... + 25841114225.

It is an arithmetic number, because the mean of its divisors is an integer number (2463519519318).

Almost surely, 2^{20001022110999} is an apocalyptic number.

20001022110999 is a deficient number, since it is larger than the sum of its proper divisors (9561212120817).

20001022110999 is a wasteful number, since it uses less digits than its factorization.

20001022110999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51682227726 (or 51682227723 counting only the distinct ones).

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

The spelling of 20001022110999 in words is "twenty trillion, one billion, twenty-two million, one hundred ten thousand, nine hundred ninety-nine".