12336218 has 4 divisors (see below), whose sum is σ = 18504330. Its totient is φ = 6168108.

The previous prime is 12336217. The next prime is 12336239. The reversal of 12336218 is 81263321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81263321 = 6899 ⋅11779.

It can be written as a sum of positive squares in only one way, i.e., 9284209 + 3052009 = 3047^2 + 1747^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12336217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3084053 + ... + 3084056.

Almost surely, 2^12336218 is an apocalyptic number.

12336218 is a deficient number, since it is larger than the sum of its proper divisors (6168112).

12336218 is an equidigital number, since it uses as much as digits as its factorization.

12336218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6168111.

The product of its digits is 1728, while the sum is 26.

The square root of 12336218 is about 3512.2952609369. The cubic root of 12336218 is about 231.0613705996.

Adding to 12336218 its reverse (81263321), we get a palindrome (93599539).

The spelling of 12336218 in words is "twelve million, three hundred thirty-six thousand, two hundred eighteen".