12243321 has 12 divisors (see below), whose sum is σ = 17861220. Its totient is φ = 8080800.

The previous prime is 12243317. The next prime is 12243323. The reversal of 12243321 is 12334221.

It can be written as a sum of positive squares in 2 ways, for example, as 10169721 + 2073600 = 3189^2 + 1440^2 .

It is not a de Polignac number, because 12243321 - 2² = 12243317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12243294 and 12243303.

It is not an unprimeable number, because it can be changed into a prime (12243323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5826 + ... + 7643.

It is an arithmetic number, because the mean of its divisors is an integer number (1488435).

Almost surely, 2^12243321 is an apocalyptic number.

It is an amenable number.

12243321 is a deficient number, since it is larger than the sum of its proper divisors (5617899).

12243321 is a wasteful number, since it uses less digits than its factorization.

12243321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13576 (or 13573 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 12243321 is about 3499.0457270519. The cubic root of 12243321 is about 230.4799116069.

Adding to 12243321 its reverse (12334221), we get a palindrome (24577542).

The spelling of 12243321 in words is "twelve million, two hundred forty-three thousand, three hundred twenty-one".