22222221112 has 64 divisors (see below), whose sum is σ = 51736063680. Its totient is φ = 8713377792.

The previous prime is 22222221083. The next prime is 22222221139. The reversal of 22222221112 is 21112222222.

It is a super-2 number, since 2×22222221112² (a number of 21 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22222221112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52803 + ... + 217330.

It is an arithmetic number, because the mean of its divisors is an integer number (808375995).

Almost surely, 2^22222221112 is an apocalyptic number.

It is an amenable number.

22222221112 is an abundant number, since it is smaller than the sum of its proper divisors (29513842568).

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

22222221112 is a wasteful number, since it uses less digits than its factorization.

22222221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270272 (or 270268 counting only the distinct ones).

The product of its digits is 256, while the sum is 19.

Adding to 22222221112 its reverse (21112222222), we get a palindrome (43334443334).

The spelling of 22222221112 in words is "twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred twelve".