12000424321 has 4 divisors (see below), whose sum is σ = 12706331652. Its totient is φ = 11294516992.

The previous prime is 12000424307. The next prime is 12000424343. The reversal of 12000424321 is 12342400021.

12000424321 is digitally balanced in base 2, 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: 12342400021 = 7 ⋅1763200003.

It can be written as a sum of positive squares in 2 ways, for example, as 6724000000 + 5276424321 = 82000^2 + 72639^2 .

It is a cyclic number.

It is not a de Polignac number, because 12000424321 - 2²¹ = 11998327169 is a prime.

It is a super-2 number, since 2×12000424321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12000424361) 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 3 ways as a sum of consecutive naturals, for example, 352953640 + ... + 352953673.

It is an arithmetic number, because the mean of its divisors is an integer number (3176582913).

Almost surely, 2^12000424321 is an apocalyptic number.

It is an amenable number.

12000424321 is a deficient number, since it is larger than the sum of its proper divisors (705907331).

12000424321 is an equidigital number, since it uses as much as digits as its factorization.

12000424321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705907330.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12000424321 its reverse (12342400021), we get a palindrome (24342824342).

The spelling of 12000424321 in words is "twelve billion, four hundred twenty-four thousand, three hundred twenty-one".