22212211122 has 32 divisors (see below), whose sum is σ = 49394755200. Its totient is φ = 7398927504.

The previous prime is 22212211111. The next prime is 22212211123. The reversal of 22212211122 is 22111221222.

It is a happy number.

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 = 22212211095 and 22212211104.

It is not an unprimeable number, because it can be changed into a prime (22212211123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63997 + ... + 220272.

It is an arithmetic number, because the mean of its divisors is an integer number (1543586100).

Almost surely, 2^22212211122 is an apocalyptic number.

22212211122 is an abundant number, since it is smaller than the sum of its proper divisors (27182544078).

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

22212211122 is a wasteful number, since it uses less digits than its factorization.

22212211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285727 (or 285721 counting only the distinct ones).

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

Adding to 22212211122 its reverse (22111221222), we get a palindrome (44323432344).

The spelling of 22212211122 in words is "twenty-two billion, two hundred twelve million, two hundred eleven thousand, one hundred twenty-two".