13224401 has 4 divisors (see below), whose sum is σ = 13473972. Its totient is φ = 12974832.

The previous prime is 13224391. The next prime is 13224457. The reversal of 13224401 is 10442231.

13224401 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 5107600 + 8116801 = 2260^2 + 2849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13224401 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 13224401.

It is not an unprimeable number, because it can be changed into a prime (13224901) 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, 124706 + ... + 124811.

It is an arithmetic number, because the mean of its divisors is an integer number (3368493).

Almost surely, 2^13224401 is an apocalyptic number.

It is an amenable number.

13224401 is a deficient number, since it is larger than the sum of its proper divisors (249571).

13224401 is an equidigital number, since it uses as much as digits as its factorization.

13224401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249570.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 13224401 is about 3636.5369515516. The cubic root of 13224401 is about 236.4786858368.

Adding to 13224401 its reverse (10442231), we get a palindrome (23666632).

The spelling of 13224401 in words is "thirteen million, two hundred twenty-four thousand, four hundred one".