13222056 has 64 divisors (see below), whose sum is σ = 36547200. Its totient is φ = 3964928.

The previous prime is 13222037. The next prime is 13222067. The reversal of 13222056 is 65022231.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8680 + ... + 10088.

It is an arithmetic number, because the mean of its divisors is an integer number (571050).

Almost surely, 2^13222056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13222056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18273600).

13222056 is an abundant number, since it is smaller than the sum of its proper divisors (23325144).

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

13222056 is a wasteful number, since it uses less digits than its factorization.

13222056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458 (or 1454 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 13222056 is about 3636.2145151242. The cubic root of 13222056 is about 236.4647072503.

Adding to 13222056 its reverse (65022231), we get a palindrome (78244287).

The spelling of 13222056 in words is "thirteen million, two hundred twenty-two thousand, fifty-six".