12004403421 has 8 divisors (see below), whose sum is σ = 16013814784. Its totient is φ = 7998963840.

The previous prime is 12004403419. The next prime is 12004403423. The reversal of 12004403421 is 12430440021.

12004403421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12004403419) and next prime (12004403423).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12004403421 - 2¹ = 12004403419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12004403423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 985885 + ... + 997986.

It is an arithmetic number, because the mean of its divisors is an integer number (2001726848).

Almost surely, 2^12004403421 is an apocalyptic number.

It is an amenable number.

12004403421 is a deficient number, since it is larger than the sum of its proper divisors (4009411363).

12004403421 is a wasteful number, since it uses less digits than its factorization.

12004403421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985891.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 12004403421 its reverse (12430440021), we get a palindrome (24434843442).

The spelling of 12004403421 in words is "twelve billion, four million, four hundred three thousand, four hundred twenty-one".