22112021111 has 4 divisors (see below), whose sum is σ = 22314883800. Its totient is φ = 21909158424.

The previous prime is 22112021081. The next prime is 22112021161. The reversal of 22112021111 is 11112021122.

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

It is a cyclic number.

It is not a de Polignac number, because 22112021111 - 2¹⁰ = 22112020087 is a prime.

It is a super-2 number, since 2×22112021111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112021161) 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, 101431181 + ... + 101431398.

It is an arithmetic number, because the mean of its divisors is an integer number (5578720950).

Almost surely, 2^22112021111 is an apocalyptic number.

22112021111 is a deficient number, since it is larger than the sum of its proper divisors (202862689).

22112021111 is a wasteful number, since it uses less digits than its factorization.

22112021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202862688.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22112021111 its reverse (11112021122), we get a palindrome (33224042233).

The spelling of 22112021111 in words is "twenty-two billion, one hundred twelve million, twenty-one thousand, one hundred eleven".