22212222222 has 8 divisors (see below), whose sum is σ = 44424444456. Its totient is φ = 7404074072.

The previous prime is 22212222217. The next prime is 22212222223. The reversal of 22212222222 is 22222221222.

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

22212222222 is an admirable number.

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

22212222222 is a modest number, since divided by 222222 gives 22212 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212222223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1851018513 + ... + 1851018524.

It is an arithmetic number, because the mean of its divisors is an integer number (5553055557).

Almost surely, 2^22212222222 is an apocalyptic number.

22212222222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22212222222 is a wasteful number, since it uses less digits than its factorization.

22212222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3702037042.

The product of its digits is 1024, while the sum is 21.

Adding to 22212222222 its reverse (22222221222), we get a palindrome (44434443444).

The spelling of 22212222222 in words is "twenty-two billion, two hundred twelve million, two hundred twenty-two thousand, two hundred twenty-two".