22212111111 has 8 divisors (see below), whose sum is σ = 29666603904. Its totient is φ = 14782846200.

The previous prime is 22212111091. The next prime is 22212111113. The reversal of 22212111111 is 11111121222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22212111111 - 2²² = 22207916807 is a prime.

22212111111 is a modest number, since divided by 111111 gives 22212 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212111113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6304915 + ... + 6308436.

It is an arithmetic number, because the mean of its divisors is an integer number (3708325488).

Almost surely, 2^22212111111 is an apocalyptic number.

22212111111 is a deficient number, since it is larger than the sum of its proper divisors (7454492793).

22212111111 is a wasteful number, since it uses less digits than its factorization.

22212111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12613941.

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

Adding to 22212111111 its reverse (11111121222), we get a palindrome (33323232333).

The spelling of 22212111111 in words is "twenty-two billion, two hundred twelve million, one hundred eleven thousand, one hundred eleven".