13325221 has 16 divisors (see below), whose sum is σ = 16543744. Its totient is φ = 10450944.

The previous prime is 13325203. The next prime is 13325231. The reversal of 13325221 is 12252331.

It is not a de Polignac number, because 13325221 - 2¹⁷ = 13194149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13325231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10981 + ... + 12133.

It is an arithmetic number, because the mean of its divisors is an integer number (1033984).

Almost surely, 2^13325221 is an apocalyptic number.

It is an amenable number.

13325221 is a deficient number, since it is larger than the sum of its proper divisors (3218523).

13325221 is a wasteful number, since it uses less digits than its factorization.

13325221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300.

The product of its digits is 360, while the sum is 19.

The square root of 13325221 is about 3650.3727206958. The cubic root of 13325221 is about 237.0781193692.

Adding to 13325221 its reverse (12252331), we get a palindrome (25577552).

The spelling of 13325221 in words is "thirteen million, three hundred twenty-five thousand, two hundred twenty-one".