12218044 has 12 divisors (see below), whose sum is σ = 21428568. Its totient is φ = 6095600.

The previous prime is 12218033. The next prime is 12218051. The reversal of 12218044 is 44081221.

It is a congruent number.

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, 1147 + ... + 5074.

It is an arithmetic number, because the mean of its divisors is an integer number (1785714).

Almost surely, 2^12218044 is an apocalyptic number.

It is an amenable number.

12218044 is a deficient number, since it is larger than the sum of its proper divisors (9210524).

12218044 is a wasteful number, since it uses less digits than its factorization.

12218044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6716 (or 6714 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 12218044 is about 3495.4318760348. The cubic root of 12218044 is about 230.3211895688.

Adding to 12218044 its reverse (44081221), we get a palindrome (56299265).

The spelling of 12218044 in words is "twelve million, two hundred eighteen thousand, forty-four".