12223724 has 6 divisors (see below), whose sum is σ = 21391524. Its totient is φ = 6111860.

The previous prime is 12223721. The next prime is 12223751. The reversal of 12223724 is 42732221.

It is a happy number.

12223724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12223724.

It is not an unprimeable number, because it can be changed into a prime (12223721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1527962 + ... + 1527969.

It is an arithmetic number, because the mean of its divisors is an integer number (3565254).

Almost surely, 2^12223724 is an apocalyptic number.

It is an amenable number.

12223724 is a deficient number, since it is larger than the sum of its proper divisors (9167800).

12223724 is a wasteful number, since it uses less digits than its factorization.

12223724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055935 (or 3055933 counting only the distinct ones).

The product of its digits is 1344, while the sum is 23.

The square root of 12223724 is about 3496.2442706424. The cubic root of 12223724 is about 230.3568750868.

Adding to 12223724 its reverse (42732221), we get a palindrome (54955945).

The spelling of 12223724 in words is "twelve million, two hundred twenty-three thousand, seven hundred twenty-four".