12004025421 has 16 divisors (see below), whose sum is σ = 16133140800. Its totient is φ = 7938933120.

The previous prime is 12004025413. The next prime is 12004025443. The reversal of 12004025421 is 12452040021.

It is not a de Polignac number, because 12004025421 - 2³ = 12004025413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12004025401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345961 + ... + 379073.

It is an arithmetic number, because the mean of its divisors is an integer number (1008321300).

Almost surely, 2^12004025421 is an apocalyptic number.

It is an amenable number.

12004025421 is a deficient number, since it is larger than the sum of its proper divisors (4129115379).

12004025421 is a wasteful number, since it uses less digits than its factorization.

12004025421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34076.

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 12004025421 its reverse (12452040021), we get a palindrome (24456065442).

The spelling of 12004025421 in words is "twelve billion, four million, twenty-five thousand, four hundred twenty-one".