22118412 has 12 divisors (see below), whose sum is σ = 51609656. Its totient is φ = 7372800.

The previous prime is 22118401. The next prime is 22118449. The reversal of 22118412 is 21481122.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921589 + ... + 921612.

Almost surely, 2^22118412 is an apocalyptic number.

It is an amenable number.

22118412 is an abundant number, since it is smaller than the sum of its proper divisors (29491244).

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

22118412 is a wasteful number, since it uses less digits than its factorization.

22118412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843208 (or 1843206 counting only the distinct ones).

The product of its digits is 256, while the sum is 21.

The square root of 22118412 is about 4703.0215819194. The cubic root of 22118412 is about 280.7057536326.

Adding to 22118412 its reverse (21481122), we get a palindrome (43599534).

The spelling of 22118412 in words is "twenty-two million, one hundred eighteen thousand, four hundred twelve".