12218343 has 8 divisors (see below), whose sum is σ = 16326528. Its totient is φ = 8127864.

The previous prime is 12218333. The next prime is 12218363. The reversal of 12218343 is 34381221.

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

It is not a de Polignac number, because 12218343 - 2¹⁸ = 11956199 is a prime.

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, 2721 + ... + 5642.

It is an arithmetic number, because the mean of its divisors is an integer number (2040816).

Almost surely, 2^12218343 is an apocalyptic number.

12218343 is a deficient number, since it is larger than the sum of its proper divisors (4108185).

12218343 is an equidigital number, since it uses as much as digits as its factorization.

12218343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8853.

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

The square root of 12218343 is about 3495.4746458814. The cubic root of 12218343 is about 230.3230683604.

Adding to 12218343 its reverse (34381221), we get a palindrome (46599564).

It can be divided in two parts, 12218 and 343, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 12218343 in words is "twelve million, two hundred eighteen thousand, three hundred forty-three".