20111100012201 has 64 divisors (see below), whose sum is σ = 30409768857600. Its totient is φ = 11714930208000.

The previous prime is 20111100012187. The next prime is 20111100012233. The reversal of 20111100012201 is 10221000111102.

It is not a de Polignac number, because 20111100012201 - 2²¹ = 20111097915049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20111100012001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 53952180 + ... + 54323658.

It is an arithmetic number, because the mean of its divisors is an integer number (475152638400).

Almost surely, 2^{20111100012201} is an apocalyptic number.

It is an amenable number.

20111100012201 is a deficient number, since it is larger than the sum of its proper divisors (10298668845399).

20111100012201 is a wasteful number, since it uses less digits than its factorization.

20111100012201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372070.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20111100012201 its reverse (10221000111102), we get a palindrome (30332100123303).

The spelling of 20111100012201 in words is "twenty trillion, one hundred eleven billion, one hundred million, twelve thousand, two hundred one".