22201221111 has 16 divisors (see below), whose sum is σ = 32190008544. Its totient is φ = 13553685504.

The previous prime is 22201221089. The next prime is 22201221131. The reversal of 22201221111 is 11112210222.

It is not a de Polignac number, because 22201221111 - 2⁷ = 22201220983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201221131) 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, 5880790 + ... + 5884563.

It is an arithmetic number, because the mean of its divisors is an integer number (2011875534).

Almost surely, 2^22201221111 is an apocalyptic number.

22201221111 is a deficient number, since it is larger than the sum of its proper divisors (9988787433).

22201221111 is a wasteful number, since it uses less digits than its factorization.

22201221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11765410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22201221111 its reverse (11112210222), we get a palindrome (33313431333).

The spelling of 22201221111 in words is "twenty-two billion, two hundred one million, two hundred twenty-one thousand, one hundred eleven".