22112012 has 24 divisors (see below), whose sum is σ = 42361872. Its totient is φ = 10036800.

The previous prime is 22112009. The next prime is 22112017. The reversal of 22112012 is 21021122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22111984 and 22112002.

It is not an unprimeable number, because it can be changed into a prime (22112017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314 + ... + 6657.

It is an arithmetic number, because the mean of its divisors is an integer number (1765078).

Almost surely, 2^22112012 is an apocalyptic number.

It is an amenable number.

22112012 is a deficient number, since it is larger than the sum of its proper divisors (20249860).

22112012 is a wasteful number, since it uses less digits than its factorization.

22112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7049 (or 7047 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 22112012 is about 4702.3411190597. The cubic root of 22112012 is about 280.6786767924.

Adding to 22112012 its reverse (21021122), we get a palindrome (43133134).

The spelling of 22112012 in words is "twenty-two million, one hundred twelve thousand, twelve".