22122122211 has 12 divisors (see below), whose sum is σ = 36519058992. Its totient is φ = 12641212656.

The previous prime is 22122122203. The next prime is 22122122251. The reversal of 22122122211 is 11222122122.

It is a happy number.

22122122211 is a `hidden beast` number, since 221 + 221 + 2 + 221 + 1 = 666.

It is not a de Polignac number, because 22122122211 - 2³ = 22122122203 is a prime.

It is a super-2 number, since 2×22122122211² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22122122251) 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, 175572336 + ... + 175572461.

It is an arithmetic number, because the mean of its divisors is an integer number (3043254916).

Almost surely, 2^22122122211 is an apocalyptic number.

22122122211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22122122211 is a deficient number, since it is larger than the sum of its proper divisors (14396936781).

22122122211 is a wasteful number, since it uses less digits than its factorization.

22122122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351144810 (or 351144807 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

Adding to 22122122211 its reverse (11222122122), we get a palindrome (33344244333).

The spelling of 22122122211 in words is "twenty-two billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred eleven".