12224005 has 4 divisors (see below), whose sum is σ = 14668812. Its totient is φ = 9779200.

The previous prime is 12223987. The next prime is 12224021. The reversal of 12224005 is 50042221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6687396 + 5536609 = 2586^2 + 2353^2 .

It is not a de Polignac number, because 12224005 - 2¹⁹ = 11699717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12224005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1222396 + ... + 1222405.

It is an arithmetic number, because the mean of its divisors is an integer number (3667203).

Almost surely, 2^12224005 is an apocalyptic number.

It is an amenable number.

12224005 is a deficient number, since it is larger than the sum of its proper divisors (2444807).

12224005 is an equidigital number, since it uses as much as digits as its factorization.

12224005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444806.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 12224005 is about 3496.2844563908. The cubic root of 12224005 is about 230.3586402277.

Adding to 12224005 its reverse (50042221), we get a palindrome (62266226).

The spelling of 12224005 in words is "twelve million, two hundred twenty-four thousand, five".