13222444 has 6 divisors (see below), whose sum is σ = 23139284. Its totient is φ = 6611220.

The previous prime is 13222441. The next prime is 13222453. The reversal of 13222444 is 44422231.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13222441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1652802 + ... + 1652809.

Almost surely, 2^13222444 is an apocalyptic number.

It is an amenable number.

13222444 is a deficient number, since it is larger than the sum of its proper divisors (9916840).

13222444 is a wasteful number, since it uses less digits than its factorization.

13222444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3305615 (or 3305613 counting only the distinct ones).

The product of its digits is 1536, while the sum is 22.

The square root of 13222444 is about 3636.2678669207. The cubic root of 13222444 is about 236.4670202393.

Adding to 13222444 its reverse (44422231), we get a palindrome (57644675).

The spelling of 13222444 in words is "thirteen million, two hundred twenty-two thousand, four hundred forty-four".