13222216 has 16 divisors (see below), whose sum is σ = 28333440. Its totient is φ = 5666640.

The previous prime is 13222207. The next prime is 13222229. The reversal of 13222216 is 61222231.

It is a junction number, because it is equal to n+sod(n) for n = 13222193 and 13222202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118000 + ... + 118111.

It is an arithmetic number, because the mean of its divisors is an integer number (1770840).

Almost surely, 2^13222216 is an apocalyptic number.

It is an amenable number.

13222216 is an abundant number, since it is smaller than the sum of its proper divisors (15111224).

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

13222216 is a wasteful number, since it uses less digits than its factorization.

13222216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236124 (or 236120 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 13222216 is about 3636.2365159599. The cubic root of 13222216 is about 236.4656610657.

Adding to 13222216 its reverse (61222231), we get a palindrome (74444447).

The spelling of 13222216 in words is "thirteen million, two hundred twenty-two thousand, two hundred sixteen".