13211224 has 16 divisors (see below), whose sum is σ = 26676720. Its totient is φ = 6097440.

The previous prime is 13211207. The next prime is 13211243. The reversal of 13211224 is 42211231.

It is a junction number, because it is equal to n+sod(n) for n = 13211198 and 13211207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63412 + ... + 63619.

It is an arithmetic number, because the mean of its divisors is an integer number (1667295).

Almost surely, 2^13211224 is an apocalyptic number.

It is an amenable number.

13211224 is an abundant number, since it is smaller than the sum of its proper divisors (13465496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13211224 is a wasteful number, since it uses less digits than its factorization.

13211224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127050 (or 127046 counting only the distinct ones).

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

The square root of 13211224 is about 3634.7247488634. The cubic root of 13211224 is about 236.4001160479.

Adding to 13211224 its reverse (42211231), we get a palindrome (55422455).

The spelling of 13211224 in words is "thirteen million, two hundred eleven thousand, two hundred twenty-four".