12711223 has 16 divisors (see below), whose sum is σ = 15482880. Its totient is φ = 10187136.

The previous prime is 12711221. The next prime is 12711227. The reversal of 12711223 is 32211721.

It is a cyclic number.

It is not a de Polignac number, because 12711223 - 2¹ = 12711221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12711223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12711221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26298 + ... + 26776.

It is an arithmetic number, because the mean of its divisors is an integer number (967680).

Almost surely, 2^12711223 is an apocalyptic number.

12711223 is a deficient number, since it is larger than the sum of its proper divisors (2771657).

12711223 is a wasteful number, since it uses less digits than its factorization.

12711223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726.

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

The square root of 12711223 is about 3565.2802133914. The cubic root of 12711223 is about 233.3793607613.

Adding to 12711223 its reverse (32211721), we get a palindrome (44922944).

The spelling of 12711223 in words is "twelve million, seven hundred eleven thousand, two hundred twenty-three".