12013444004321 has 4 divisors (see below), whose sum is σ = 12026265183492. Its totient is φ = 12000622825152.

The previous prime is 12013444004297. The next prime is 12013444004327. The reversal of 12013444004321 is 12340044431021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1025279778721 + 10988164225600 = 1012561^2 + 3314840^2 .

It is a cyclic number.

It is not a de Polignac number, because 12013444004321 - 2³⁴ = 11996264135137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12013444004327) 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, 6410588180 + ... + 6410590053.

It is an arithmetic number, because the mean of its divisors is an integer number (3006566295873).

Almost surely, 2^{12013444004321} is an apocalyptic number.

It is an amenable number.

12013444004321 is a deficient number, since it is larger than the sum of its proper divisors (12821179171).

12013444004321 is an equidigital number, since it uses as much as digits as its factorization.

12013444004321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12821179170.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 12013444004321 its reverse (12340044431021), we get a palindrome (24353488435342).

The spelling of 12013444004321 in words is "twelve trillion, thirteen billion, four hundred forty-four million, four thousand, three hundred twenty-one".