22281112 has 32 divisors (see below), whose sum is σ = 49824000. Its totient is φ = 9133344.

The previous prime is 22281109. The next prime is 22281113. The reversal of 22281112 is 21118222.

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 22281112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22281113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7362 + ... + 9937.

It is an arithmetic number, because the mean of its divisors is an integer number (1557000).

Almost surely, 2^22281112 is an apocalyptic number.

It is an amenable number.

22281112 is an abundant number, since it is smaller than the sum of its proper divisors (27542888).

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

22281112 is a wasteful number, since it uses less digits than its factorization.

22281112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17335 (or 17331 counting only the distinct ones).

The product of its digits is 128, while the sum is 19.

The square root of 22281112 is about 4720.2872793931. The cubic root of 22281112 is about 281.3923505236.

Adding to 22281112 its reverse (21118222), we get a palindrome (43399334).

The spelling of 22281112 in words is "twenty-two million, two hundred eighty-one thousand, one hundred twelve".