12000321 has 12 divisors (see below), whose sum is σ = 17802772. Its totient is φ = 7783776.

The previous prime is 12000281. The next prime is 12000353. The reversal of 12000321 is 12300021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5948721 + 6051600 = 2439^2 + 2460^2 .

It is not a de Polignac number, because 12000321 - 2⁶ = 12000257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17686 + ... + 18351.

Almost surely, 2^12000321 is an apocalyptic number.

It is an amenable number.

12000321 is a deficient number, since it is larger than the sum of its proper divisors (5802451).

12000321 is a wasteful number, since it uses less digits than its factorization.

12000321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36080 (or 36077 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 12000321 is about 3464.1479471870. The cubic root of 12000321 is about 228.9448898995.

Adding to 12000321 its reverse (12300021), we get a palindrome (24300342).

It can be divided in two parts, 12000 and 321, that added together give a palindrome (12321).

The spelling of 12000321 in words is "twelve million, three hundred twenty-one", and thus it is an aban number.