12211723 has 2 divisors, whose sum is σ = 12211724. Its totient is φ = 12211722.

The previous prime is 12211721. The next prime is 12211747. The reversal of 12211723 is 32711221.

12211723 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12211723 - 2¹ = 12211721 is a prime.

Together with 12211721, it forms a pair of twin primes.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 12211723.

It is not a weakly prime, because it can be changed into another prime (12211721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105861 + 6105862.

It is an arithmetic number, because the mean of its divisors is an integer number (6105862).

Almost surely, 2^12211723 is an apocalyptic number.

12211723 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211723 is an equidigital number, since it uses as much as digits as its factorization.

12211723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168, while the sum is 19.

The square root of 12211723 is about 3494.5275789440. The cubic root of 12211723 is about 230.2814638600.

Adding to 12211723 its reverse (32711221), we get a palindrome (44922944).

The spelling of 12211723 in words is "twelve million, two hundred eleven thousand, seven hundred twenty-three".