13221464 has 16 divisors (see below), whose sum is σ = 24870120. Its totient is φ = 6589440.

The previous prime is 13221457. The next prime is 13221479. The reversal of 13221464 is 46412231.

It is a super-2 number, since 2×13221464² = 349614220606592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 152 + ... + 5144.

Almost surely, 2^13221464 is an apocalyptic number.

It is an amenable number.

13221464 is a deficient number, since it is larger than the sum of its proper divisors (11648656).

13221464 is a wasteful number, since it uses less digits than its factorization.

13221464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330 (or 5326 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 13221464 is about 3636.1331108748. The cubic root of 13221464 is about 236.4611780666.

Adding to 13221464 its reverse (46412231), we get a palindrome (59633695).

The spelling of 13221464 in words is "thirteen million, two hundred twenty-one thousand, four hundred sixty-four".