20000111202001 has 16 divisors (see below), whose sum is σ = 23293264203648. Its totient is φ = 16816088016000.

The previous prime is 20000111201953. The next prime is 20000111202047. The reversal of 20000111202001 is 10020211100002.

It is not a de Polignac number, because 20000111202001 - 2²⁵ = 20000077647569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20000121202001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3636900 + ... + 7295701.

It is an arithmetic number, because the mean of its divisors is an integer number (1455829012728).

Almost surely, 2^{20000111202001} is an apocalyptic number.

It is an amenable number.

20000111202001 is a deficient number, since it is larger than the sum of its proper divisors (3293153001647).

20000111202001 is a wasteful number, since it uses less digits than its factorization.

20000111202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10937592.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20000111202001 its reverse (10020211100002), we get a palindrome (30020322302003).

The spelling of 20000111202001 in words is "twenty trillion, one hundred eleven million, two hundred two thousand, one".