12443344334421 has 128 divisors (see below), whose sum is σ = 22882589786112. Its totient is φ = 5804472960000.

The previous prime is 12443344334401. The next prime is 12443344334453.

12443344334421 is nontrivially palindromic in base 10.

12443344334421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12443344334421 - 2¹¹ = 12443344332373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12443344334401) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1100104356 + ... + 1100115666.

It is an arithmetic number, because the mean of its divisors is an integer number (178770232704).

Almost surely, 2^{12443344334421} is an apocalyptic number.

12443344334421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12443344334421 is a deficient number, since it is larger than the sum of its proper divisors (10439245451691).

12443344334421 is a wasteful number, since it uses less digits than its factorization.

12443344334421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21283.

The product of its digits is 1327104, while the sum is 42.

It can be divided in two parts, 1244334 and 4334421, that added together give a palindrome (5578755).

The spelling of 12443344334421 in words is "twelve trillion, four hundred forty-three billion, three hundred forty-four million, three hundred thirty-four thousand, four hundred twenty-one".