12217344 has 88 divisors (see below), whose sum is σ = 33701808. Its totient is φ = 3932160.

The previous prime is 12217333. The next prime is 12217391. The reversal of 12217344 is 44371221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125904 + ... + 126000.

Almost surely, 2^12217344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12217344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16850904).

12217344 is an abundant number, since it is smaller than the sum of its proper divisors (21484464).

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

12217344 is an equidigital number, since it uses as much as digits as its factorization.

12217344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 143 counting only the distinct ones).

The product of its digits is 1344, while the sum is 24.

The square root of 12217344 is about 3495.3317439122. The cubic root of 12217344 is about 230.3167909403.

Adding to 12217344 its reverse (44371221), we get a palindrome (56588565).

It can be divided in two parts, 12217 and 344, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 12217344 in words is "twelve million, two hundred seventeen thousand, three hundred forty-four".