12322218 has 8 divisors (see below), whose sum is σ = 24644448. Its totient is φ = 4107404.

The previous prime is 12322217. The next prime is 12322223. The reversal of 12322218 is 81222321.

It is a happy number.

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

12322218 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12322194 and 12322203.

It is not an unprimeable number, because it can be changed into a prime (12322213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1026846 + ... + 1026857.

It is an arithmetic number, because the mean of its divisors is an integer number (3080556).

Almost surely, 2^12322218 is an apocalyptic number.

12322218 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12322218 is a wasteful number, since it uses less digits than its factorization.

12322218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053708.

The product of its digits is 384, while the sum is 21.

The square root of 12322218 is about 3510.3016964358. The cubic root of 12322218 is about 230.9739293304.

Adding to 12322218 its reverse (81222321), we get a palindrome (93544539).

The spelling of 12322218 in words is "twelve million, three hundred twenty-two thousand, two hundred eighteen".