12222318 has 16 divisors (see below), whose sum is σ = 24624720. Its totient is φ = 4044096.

The previous prime is 12222307. The next prime is 12222319. The reversal of 12222318 is 81322221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12222294 and 12222303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222319) 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, 6613 + ... + 8256.

It is an arithmetic number, because the mean of its divisors is an integer number (1539045).

Almost surely, 2^12222318 is an apocalyptic number.

12222318 is an abundant number, since it is smaller than the sum of its proper divisors (12402402).

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

12222318 is a wasteful number, since it uses less digits than its factorization.

12222318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15011.

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

The square root of 12222318 is about 3496.0431919529. The cubic root of 12222318 is about 230.3480426942.

Adding to 12222318 its reverse (81322221), we get a palindrome (93544539).

The spelling of 12222318 in words is "twelve million, two hundred twenty-two thousand, three hundred eighteen".