12321073 has 4 divisors (see below), whose sum is σ = 13045860. Its totient is φ = 11596288.

The previous prime is 12321061. The next prime is 12321083. The reversal of 12321073 is 37012321.

12321073 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37012321 = 37 ⋅1000333.

It can be written as a sum of positive squares in 2 ways, for example, as 6594624 + 5726449 = 2568^2 + 2393^2 .

It is a cyclic number.

It is not a de Polignac number, because 12321073 - 2⁵ = 12321041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12321073.

It is not an unprimeable number, because it can be changed into a prime (12321053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362368 + ... + 362401.

It is an arithmetic number, because the mean of its divisors is an integer number (3261465).

Almost surely, 2^12321073 is an apocalyptic number.

It is an amenable number.

12321073 is a deficient number, since it is larger than the sum of its proper divisors (724787).

12321073 is an equidigital number, since it uses as much as digits as its factorization.

12321073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724786.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 12321073 is about 3510.1386012521. The cubic root of 12321073 is about 230.9667749544.

Adding to 12321073 its reverse (37012321), we get a palindrome (49333394).

The spelling of 12321073 in words is "twelve million, three hundred twenty-one thousand, seventy-three".