12224533 has 4 divisors (see below), whose sum is σ = 12231648. Its totient is φ = 12217420.

The previous prime is 12224521. The next prime is 12224551. The reversal of 12224533 is 33542221.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 33542221 = 863 ⋅38867.

It is a cyclic number.

It is not a de Polignac number, because 12224533 - 2⁵ = 12224501 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12224593) 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, 798 + ... + 5008.

It is an arithmetic number, because the mean of its divisors is an integer number (3057912).

Almost surely, 2^12224533 is an apocalyptic number.

It is an amenable number.

12224533 is a deficient number, since it is larger than the sum of its proper divisors (7115).

12224533 is an equidigital number, since it uses as much as digits as its factorization.

12224533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7114.

The product of its digits is 1440, while the sum is 22.

The square root of 12224533 is about 3496.3599643057. The cubic root of 12224533 is about 230.3619568605.

Adding to 12224533 its reverse (33542221), we get a palindrome (45766754).

The spelling of 12224533 in words is "twelve million, two hundred twenty-four thousand, five hundred thirty-three".