12424444421 has 8 divisors (see below), whose sum is σ = 12581442720. Its totient is φ = 12268203408.

The previous prime is 12424444363. The next prime is 12424444429. The reversal of 12424444421 is 12444442421.

12424444421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12424444421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12424444429) 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, 156266 + ... + 221963.

It is an arithmetic number, because the mean of its divisors is an integer number (1572680340).

Almost surely, 2^12424444421 is an apocalyptic number.

It is an amenable number.

12424444421 is a deficient number, since it is larger than the sum of its proper divisors (156998299).

12424444421 is a wasteful number, since it uses less digits than its factorization.

12424444421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378643.

The product of its digits is 32768, while the sum is 32.

Adding to 12424444421 its reverse (12444442421), we get a palindrome (24868886842).

The spelling of 12424444421 in words is "twelve billion, four hundred twenty-four million, four hundred forty-four thousand, four hundred twenty-one".