12159218 has 8 divisors (see below), whose sum is σ = 18340140. Its totient is φ = 6045840.

The previous prime is 12159187. The next prime is 12159281. The reversal of 12159218 is 81295121.

12159218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12159169 + 49 = 3487^2 + 7^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 16433 + ... + 17156.

Almost surely, 2^12159218 is an apocalyptic number.

12159218 is a deficient number, since it is larger than the sum of its proper divisors (6180922).

12159218 is a wasteful number, since it uses less digits than its factorization.

12159218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33772.

The product of its digits is 1440, while the sum is 29.

The square root of 12159218 is about 3487.0070260899. The cubic root of 12159218 is about 229.9509536250.

The spelling of 12159218 in words is "twelve million, one hundred fifty-nine thousand, two hundred eighteen".