12223222 has 16 divisors (see below), whose sum is σ = 20203344. Its totient is φ = 5500000.

The previous prime is 12223199. The next prime is 12223271. The reversal of 12223222 is 22232221.

It is a super-2 number, since 2×12223222² = 298814312122568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12223196 and 12223205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529 + ... + 4972.

It is an arithmetic number, because the mean of its divisors is an integer number (1262709).

Almost surely, 2^12223222 is an apocalyptic number.

12223222 is a deficient number, since it is larger than the sum of its proper divisors (7980122).

12223222 is a wasteful number, since it uses less digits than its factorization.

12223222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5615.

The product of its digits is 192, while the sum is 16.

The square root of 12223222 is about 3496.1724785828. The cubic root of 12223222 is about 230.3537216360.

Adding to 12223222 its reverse (22232221), we get a palindrome (34455443).

It can be divided in two parts, 1222 and 3222, that added together give a palindrome (4444).

The spelling of 12223222 in words is "twelve million, two hundred twenty-three thousand, two hundred twenty-two".