12209318 has 8 divisors (see below), whose sum is σ = 19978920. Its totient is φ = 5549680.

The previous prime is 12209273. The next prime is 12209321. The reversal of 12209318 is 81390221.

12209318 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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, 277463 + ... + 277506.

It is an arithmetic number, because the mean of its divisors is an integer number (2497365).

Almost surely, 2^12209318 is an apocalyptic number.

12209318 is a deficient number, since it is larger than the sum of its proper divisors (7769602).

12209318 is a wasteful number, since it uses less digits than its factorization.

12209318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554982.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 12209318 is about 3494.1834525394. The cubic root of 12209318 is about 230.2663455107.

Adding to 12209318 its reverse (81390221), we get a palindrome (93599539).

The spelling of 12209318 in words is "twelve million, two hundred nine thousand, three hundred eighteen".