13241444221 has 4 divisors (see below), whose sum is σ = 13257812700. Its totient is φ = 13225075744.

The previous prime is 13241444189. The next prime is 13241444243. The reversal of 13241444221 is 12244414231.

13241444221 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.

It can be written as a sum of positive squares in 2 ways, for example, as 9386896996 + 3854547225 = 96886^2 + 62085^2 .

It is a cyclic number.

It is not a de Polignac number, because 13241444221 - 2⁵ = 13241444189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13241444221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13241444291) 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, 8183026 + ... + 8184643.

It is an arithmetic number, because the mean of its divisors is an integer number (3314453175).

Almost surely, 2^13241444221 is an apocalyptic number.

It is an amenable number.

13241444221 is a deficient number, since it is larger than the sum of its proper divisors (16368479).

13241444221 is an equidigital number, since it uses as much as digits as its factorization.

13241444221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16368478.

The product of its digits is 6144, while the sum is 28.

Adding to 13241444221 its reverse (12244414231), we get a palindrome (25485858452).

The spelling of 13241444221 in words is "thirteen billion, two hundred forty-one million, four hundred forty-four thousand, two hundred twenty-one".