12104213321 has 4 divisors (see below), whose sum is σ = 12741277200. Its totient is φ = 11467149444.

The previous prime is 12104213309. The next prime is 12104213327. The reversal of 12104213321 is 12331240121.

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 12104213321 - 2⁶ = 12104213257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12104213293 and 12104213302.

It is not an unprimeable number, because it can be changed into a prime (12104213327) 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, 318531911 + ... + 318531948.

It is an arithmetic number, because the mean of its divisors is an integer number (3185319300).

Almost surely, 2^12104213321 is an apocalyptic number.

It is an amenable number.

12104213321 is a deficient number, since it is larger than the sum of its proper divisors (637063879).

12104213321 is an equidigital number, since it uses as much as digits as its factorization.

12104213321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637063878.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12104213321 its reverse (12331240121), we get a palindrome (24435453442).

The spelling of 12104213321 in words is "twelve billion, one hundred four million, two hundred thirteen thousand, three hundred twenty-one".