12223556 has 12 divisors (see below), whose sum is σ = 21435792. Its totient is φ = 6099048.

The previous prime is 12223553. The next prime is 12223571. The reversal of 12223556 is 65532221.

It is a plaindrome in base 10.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12223553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830 + ... + 5013.

It is an arithmetic number, because the mean of its divisors is an integer number (1786316).

Almost surely, 2^12223556 is an apocalyptic number.

It is an amenable number.

12223556 is a deficient number, since it is larger than the sum of its proper divisors (9212236).

12223556 is a wasteful number, since it uses less digits than its factorization.

12223556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6370 (or 6368 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 12223556 is about 3496.2202447786. The cubic root of 12223556 is about 230.3558197583.

Adding to 12223556 its reverse (65532221), we get a palindrome (77755777).

The spelling of 12223556 in words is "twelve million, two hundred twenty-three thousand, five hundred fifty-six".