13221412 has 12 divisors (see below), whose sum is σ = 24143616. Its totient is φ = 6323240.

The previous prime is 13221401. The next prime is 13221413. The reversal of 13221412 is 21412231.

13221412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13221413) 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, 71764 + ... + 71947.

It is an arithmetic number, because the mean of its divisors is an integer number (2011968).

Almost surely, 2^13221412 is an apocalyptic number.

It is an amenable number.

13221412 is a deficient number, since it is larger than the sum of its proper divisors (10922204).

13221412 is a wasteful number, since it uses less digits than its factorization.

13221412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143738 (or 143736 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 13221412 is about 3636.1259604145. The cubic root of 13221412 is about 236.4608680657.

Adding to 13221412 its reverse (21412231), we get a palindrome (34633643).

The spelling of 13221412 in words is "thirteen million, two hundred twenty-one thousand, four hundred twelve".