12222723 has 4 divisors (see below), whose sum is σ = 16296968. Its totient is φ = 8148480.

The previous prime is 12222713. The next prime is 12222731. The reversal of 12222723 is 32722221.

It is a happy number.

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

It is not a de Polignac number, because 12222723 - 2⁹ = 12222211 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 12222723.

It is not an unprimeable number, because it can be changed into a prime (12222703) 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, 2037118 + ... + 2037123.

It is an arithmetic number, because the mean of its divisors is an integer number (4074242).

Almost surely, 2^12222723 is an apocalyptic number.

12222723 is a deficient number, since it is larger than the sum of its proper divisors (4074245).

12222723 is an equidigital number, since it uses as much as digits as its factorization.

12222723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074244.

The product of its digits is 672, while the sum is 21.

The square root of 12222723 is about 3496.1011140984. The cubic root of 12222723 is about 230.3505869450.

Adding to 12222723 its reverse (32722221), we get a palindrome (44944944).

The spelling of 12222723 in words is "twelve million, two hundred twenty-two thousand, seven hundred twenty-three".