13244044221 has 12 divisors (see below), whose sum is σ = 20137143520. Its totient is φ = 8364659400.

The previous prime is 13244044213. The next prime is 13244044241. The reversal of 13244044221 is 12244044231.

13244044221 is a `hidden beast` number, since 1 + 32 + 4 + 404 + 4 + 221 = 666.

13244044221 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 13244044221 - 2³ = 13244044213 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 (13244044201) 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 11 ways as a sum of consecutive naturals, for example, 38725105 + ... + 38725446.

Almost surely, 2^13244044221 is an apocalyptic number.

It is an amenable number.

13244044221 is a deficient number, since it is larger than the sum of its proper divisors (6893099299).

13244044221 is a wasteful number, since it uses less digits than its factorization.

13244044221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77450576 (or 77450573 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 13244044221 its reverse (12244044231), we get a palindrome (25488088452).

The spelling of 13244044221 in words is "thirteen billion, two hundred forty-four million, forty-four thousand, two hundred twenty-one".