13222208 has 14 divisors (see below), whose sum is σ = 26237946. Its totient is φ = 6611072.

The previous prime is 13222207. The next prime is 13222229. The reversal of 13222208 is 80222231.

It can be written as a sum of positive squares in only one way, i.e., 10291264 + 2930944 = 3208^2 + 1712^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13222208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13222201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103235 + ... + 103362.

It is an arithmetic number, because the mean of its divisors is an integer number (1874139).

Almost surely, 2^13222208 is an apocalyptic number.

It is an amenable number.

13222208 is a deficient number, since it is larger than the sum of its proper divisors (13015738).

13222208 is an equidigital number, since it uses as much as digits as its factorization.

13222208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206609 (or 206599 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 13222208 is about 3636.2354159213. The cubic root of 13222208 is about 236.4656133751.

Adding to 13222208 its reverse (80222231), we get a palindrome (93444439).

The spelling of 13222208 in words is "thirteen million, two hundred twenty-two thousand, two hundred eight".