22031312211 has 12 divisors (see below), whose sum is σ = 32051950840. Its totient is φ = 14581874880.

The previous prime is 22031312207. The next prime is 22031312249. The reversal of 22031312211 is 11221313022.

22031312211 is a `hidden beast` number, since 220 + 313 + 122 + 11 = 666.

It is not a de Polignac number, because 22031312211 - 2² = 22031312207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22031312291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8804230 + ... + 8806731.

Almost surely, 2^22031312211 is an apocalyptic number.

22031312211 is a deficient number, since it is larger than the sum of its proper divisors (10020638629).

22031312211 is a wasteful number, since it uses less digits than its factorization.

22031312211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17611106 (or 17611103 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 22031312211 its reverse (11221313022), we get a palindrome (33252625233).

The spelling of 22031312211 in words is "twenty-two billion, thirty-one million, three hundred twelve thousand, two hundred eleven".