13221148 has 6 divisors (see below), whose sum is σ = 23137016. Its totient is φ = 6610572.

The previous prime is 13221139. The next prime is 13221149. The reversal of 13221148 is 84112231.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221149) 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 as a sum of consecutive naturals, namely, 1652640 + ... + 1652647.

Almost surely, 2^13221148 is an apocalyptic number.

It is an amenable number.

13221148 is a deficient number, since it is larger than the sum of its proper divisors (9915868).

13221148 is a wasteful number, since it uses less digits than its factorization.

13221148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3305291 (or 3305289 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

The square root of 13221148 is about 3636.0896578605. The cubic root of 13221148 is about 236.4592942024.

Adding to 13221148 its reverse (84112231), we get a palindrome (97333379).

The spelling of 13221148 in words is "thirteen million, two hundred twenty-one thousand, one hundred forty-eight".