22211211222 has 24 divisors (see below), whose sum is σ = 49424948976. Its totient is φ = 7203635856.

The previous prime is 22211211203. The next prime is 22211211227.

It is a happy number.

22211211222 is a `hidden beast` number, since 22 + 211 + 211 + 222 = 666.

22211211222 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 22211211195 and 22211211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211211227) 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, 16674418 + ... + 16675749.

It is an arithmetic number, because the mean of its divisors is an integer number (2059372874).

Almost surely, 2^22211211222 is an apocalyptic number.

22211211222 is an abundant number, since it is smaller than the sum of its proper divisors (27213737754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22211211222 is a wasteful number, since it uses less digits than its factorization.

22211211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33350212 (or 33350209 counting only the distinct ones).

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

The spelling of 22211211222 in words is "twenty-two billion, two hundred eleven million, two hundred eleven thousand, two hundred twenty-two".