12218334 has 16 divisors (see below), whose sum is σ = 24563088. Its totient is φ = 4051712.

The previous prime is 12218333. The next prime is 12218363. The reversal of 12218334 is 43381221.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12218333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3987 + ... + 6350.

It is an arithmetic number, because the mean of its divisors is an integer number (1535193).

Almost surely, 2^12218334 is an apocalyptic number.

12218334 is an abundant number, since it is smaller than the sum of its proper divisors (12344754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12218334 is a wasteful number, since it uses less digits than its factorization.

12218334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10539.

The product of its digits is 1152, while the sum is 24.

The square root of 12218334 is about 3495.4733585024. The cubic root of 12218334 is about 230.3230118086.

Adding to 12218334 its reverse (43381221), we get a palindrome (55599555).

The spelling of 12218334 in words is "twelve million, two hundred eighteen thousand, three hundred thirty-four".