12453321 has 8 divisors (see below), whose sum is σ = 16634464. Its totient is φ = 8287200.

The previous prime is 12453319. The next prime is 12453347. The reversal of 12453321 is 12335421.

12453321 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12453321 - 2¹ = 12453319 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12453361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1651 + ... + 5256.

It is an arithmetic number, because the mean of its divisors is an integer number (2079308).

Almost surely, 2^12453321 is an apocalyptic number.

It is an amenable number.

12453321 is a deficient number, since it is larger than the sum of its proper divisors (4181143).

12453321 is an equidigital number, since it uses as much as digits as its factorization.

12453321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7511.

The product of its digits is 720, while the sum is 21.

The square root of 12453321 is about 3528.9263239688. The cubic root of 12453321 is about 231.7901950346.

Adding to 12453321 its reverse (12335421), we get a palindrome (24788742).

The spelling of 12453321 in words is "twelve million, four hundred fifty-three thousand, three hundred twenty-one".