22100122111111 has 4 divisors (see below), whose sum is σ = 24109224121224. Its totient is φ = 20091020101000.

The previous prime is 22100122111099. The next prime is 22100122111189. The reversal of 22100122111111 is 11111122100122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22100122111111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22100122111211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1004551005040 + ... + 1004551005061.

It is an arithmetic number, because the mean of its divisors is an integer number (6027306030306).

Almost surely, 2^{22100122111111} is an apocalyptic number.

22100122111111 is a deficient number, since it is larger than the sum of its proper divisors (2009102010113).

22100122111111 is a wasteful number, since it uses less digits than its factorization.

22100122111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009102010112.

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

Adding to 22100122111111 its reverse (11111122100122), we get a palindrome (33211244211233).

It can be divided in two parts, 22100122 and 111111, that multiplied together give a palindrome (2455566655542).

The spelling of 22100122111111 in words is "twenty-two trillion, one hundred billion, one hundred twenty-two million, one hundred eleven thousand, one hundred eleven".