12218708 has 12 divisors (see below), whose sum is σ = 21880320. Its totient is φ = 5967192.

The previous prime is 12218707. The next prime is 12218711. The reversal of 12218708 is 80781221.

12218708 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12218707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35348 + ... + 35691.

It is an arithmetic number, because the mean of its divisors is an integer number (1823360).

Almost surely, 2^12218708 is an apocalyptic number.

It is an amenable number.

12218708 is a deficient number, since it is larger than the sum of its proper divisors (9661612).

12218708 is a wasteful number, since it uses less digits than its factorization.

12218708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71086 (or 71084 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 12218708 is about 3495.5268558545. The cubic root of 12218708 is about 230.3253618270.

Adding to 12218708 its reverse (80781221), we get a palindrome (92999929).

The spelling of 12218708 in words is "twelve million, two hundred eighteen thousand, seven hundred eight".