22111100202111 has 16 divisors (see below), whose sum is σ = 29527978339584. Its totient is φ = 14717479227264.

The previous prime is 22111100202041. The next prime is 22111100202127. The reversal of 22111100202111 is 11120200111122.

It is a happy number.

It is not a de Polignac number, because 22111100202111 - 2²¹ = 22111098104959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111100207111) 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, 66824700 + ... + 67154766.

It is an arithmetic number, because the mean of its divisors is an integer number (1845498646224).

Almost surely, 2^{22111100202111} is an apocalyptic number.

22111100202111 is a deficient number, since it is larger than the sum of its proper divisors (7416878137473).

22111100202111 is a wasteful number, since it uses less digits than its factorization.

22111100202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365230.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 22111100202111 its reverse (11120200111122), we get a palindrome (33231300313233).

The spelling of 22111100202111 in words is "twenty-two trillion, one hundred eleven billion, one hundred million, two hundred two thousand, one hundred eleven".