12223321 has 4 divisors (see below), whose sum is σ = 13334544. Its totient is φ = 11112100.

The previous prime is 12223313. The next prime is 12223381. The reversal of 12223321 is 12332221.

12223321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12223321 - 2³ = 12223313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12223295 and 12223304.

It is not an unprimeable number, because it can be changed into a prime (12223381) 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, 555595 + ... + 555616.

It is an arithmetic number, because the mean of its divisors is an integer number (3333636).

Almost surely, 2^12223321 is an apocalyptic number.

12223321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12223321 is a deficient number, since it is larger than the sum of its proper divisors (1111223).

12223321 is a wasteful number, since it uses less digits than its factorization.

12223321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111222.

The product of its digits is 144, while the sum is 16.

The square root of 12223321 is about 3496.1866368945. The cubic root of 12223321 is about 230.3543435385.

Adding to 12223321 its reverse (12332221), we get a palindrome (24555542).

Subtracting 12223321 from its reverse (12332221), we obtain a square (108900 = 330²).

It can be divided in two parts, 12223 and 321, that added together give a square (12544 = 112²).

The spelling of 12223321 in words is "twelve million, two hundred twenty-three thousand, three hundred twenty-one".