12045321 has 8 divisors (see below), whose sum is σ = 17844960. Its totient is φ = 8030196.

The previous prime is 12045317. The next prime is 12045343. The reversal of 12045321 is 12354021.

12045321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12045321 - 2² = 12045317 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12045294 and 12045303.

It is not an unprimeable number, because it can be changed into a prime (12045521) 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, 223035 + ... + 223088.

It is an arithmetic number, because the mean of its divisors is an integer number (2230620).

Almost surely, 2^12045321 is an apocalyptic number.

It is an amenable number.

12045321 is a deficient number, since it is larger than the sum of its proper divisors (5799639).

12045321 is an equidigital number, since it uses as much as digits as its factorization.

12045321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446132 (or 446126 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12045321 is about 3470.6369732370. The cubic root of 12045321 is about 229.2307063929.

Adding to 12045321 its reverse (12354021), we get a palindrome (24399342).

The spelling of 12045321 in words is "twelve million, forty-five thousand, three hundred twenty-one".