12104321 has 4 divisors (see below), whose sum is σ = 12157872. Its totient is φ = 12050772.

The previous prime is 12104317. The next prime is 12104329. The reversal of 12104321 is 12340121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12104321 - 2² = 12104317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12104296 and 12104305.

It is not an unprimeable number, because it can be changed into a prime (12104329) 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, 26435 + ... + 26888.

It is an arithmetic number, because the mean of its divisors is an integer number (3039468).

Almost surely, 2^12104321 is an apocalyptic number.

It is an amenable number.

12104321 is a deficient number, since it is larger than the sum of its proper divisors (53551).

12104321 is an equidigital number, since it uses as much as digits as its factorization.

12104321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53550.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 12104321 is about 3479.1264708257. The cubic root of 12104321 is about 229.6043671040.

Adding to 12104321 its reverse (12340121), we get a palindrome (24444442).

The spelling of 12104321 in words is "twelve million, one hundred four thousand, three hundred twenty-one".