12223271 has 2 divisors, whose sum is σ = 12223272. Its totient is φ = 12223270.

The previous prime is 12223199. The next prime is 12223273. The reversal of 12223271 is 17232221.

12223271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12223271 is a prime.

Together with 12223273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12223273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111635 + 6111636.

It is an arithmetic number, because the mean of its divisors is an integer number (6111636).

Almost surely, 2^12223271 is an apocalyptic number.

12223271 is a deficient number, since it is larger than the sum of its proper divisors (1).

12223271 is an equidigital number, since it uses as much as digits as its factorization.

12223271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 20.

The square root of 12223271 is about 3496.1794862392. The cubic root of 12223271 is about 230.3540294468.

Adding to 12223271 its reverse (17232221), we get a palindrome (29455492).

The spelling of 12223271 in words is "twelve million, two hundred twenty-three thousand, two hundred seventy-one".