22012112 has 10 divisors (see below), whose sum is σ = 42648498. Its totient is φ = 11006048.

The previous prime is 22012099. The next prime is 22012117. The reversal of 22012112 is 21121022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15335056 + 6677056 = 3916^2 + 2584^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22012093 and 22012102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687863 + ... + 687894.

Almost surely, 2^22012112 is an apocalyptic number.

It is an amenable number.

22012112 is a deficient number, since it is larger than the sum of its proper divisors (20636386).

22012112 is a wasteful number, since it uses less digits than its factorization.

22012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375765 (or 1375759 counting only the distinct ones).

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

The square root of 22012112 is about 4691.7067257023. The cubic root of 22012112 is about 280.2553452990.

Adding to 22012112 its reverse (21121022), we get a palindrome (43133134).

The spelling of 22012112 in words is "twenty-two million, twelve thousand, one hundred twelve".