12216352 has 12 divisors (see below), whose sum is σ = 24051006. Its totient is φ = 6108160.

The previous prime is 12216349. The next prime is 12216359. The reversal of 12216352 is 25361221.

It can be written as a sum of positive squares in only one way, i.e., 11861136 + 355216 = 3444^2 + 596^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12216359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190849 + ... + 190912.

Almost surely, 2^12216352 is an apocalyptic number.

It is an amenable number.

12216352 is a deficient number, since it is larger than the sum of its proper divisors (11834654).

12216352 is an equidigital number, since it uses as much as digits as its factorization.

12216352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381771 (or 381763 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 12216352 is about 3495.1898374766. The cubic root of 12216352 is about 230.3105571675.

Adding to 12216352 its reverse (25361221), we get a palindrome (37577573).

The spelling of 12216352 in words is "twelve million, two hundred sixteen thousand, three hundred fifty-two".