22222112 has 24 divisors (see below), whose sum is σ = 47727792. Its totient is φ = 10100800.

The previous prime is 22222097. The next prime is 22222129. The reversal of 22222112 is 21122222.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31214 + ... + 31917.

It is an arithmetic number, because the mean of its divisors is an integer number (1988658).

Almost surely, 2^22222112 is an apocalyptic number.

22222112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22222112 is an abundant number, since it is smaller than the sum of its proper divisors (25505680).

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

22222112 is a wasteful number, since it uses less digits than its factorization.

22222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63152 (or 63144 counting only the distinct ones).

The product of its digits is 64, while the sum is 14.

The square root of 22222112 is about 4714.0335170637. The cubic root of 22222112 is about 281.1437569414.

Adding to 22222112 its reverse (21122222), we get a palindrome (43344334).

It can be divided in two parts, 2222 and 2112, that added together give a palindrome (4334).

The spelling of 22222112 in words is "twenty-two million, two hundred twenty-two thousand, one hundred twelve".