13222228 has 24 divisors (see below), whose sum is σ = 24095232. Its totient is φ = 6343584.

The previous prime is 13222207. The next prime is 13222229. The reversal of 13222228 is 82222231.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13222199 and 13222208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13222229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9301 + ... + 10627.

It is an arithmetic number, because the mean of its divisors is an integer number (1003968).

Almost surely, 2^13222228 is an apocalyptic number.

It is an amenable number.

13222228 is a deficient number, since it is larger than the sum of its proper divisors (10873004).

13222228 is a wasteful number, since it uses less digits than its factorization.

13222228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431 (or 1429 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 13222228 is about 3636.2381660172. The cubic root of 13222228 is about 236.4657326015.

Adding to 13222228 its reverse (82222231), we get a palindrome (95444459).

The spelling of 13222228 in words is "thirteen million, two hundred twenty-two thousand, two hundred twenty-eight".