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12223 = 17719
BaseRepresentation
bin10111110111111
3121202201
42332333
5342343
6132331
750431
oct27677
917681
1012223
119202
1270a7
135743
144651
15394d
hex2fbf

12223 has 4 divisors (see below), whose sum is σ = 12960. Its totient is φ = 11488.

The previous prime is 12211. The next prime is 12227. The reversal of 12223 is 32221.

Adding to 12223 its reverse (32221), we get a palindrome (44444).

It can be divided in two parts, 1222 and 3, that added together give a triangular number (1225 = T49).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32221 = 74603.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12223 is a prime.

It is a Duffinian number.

12223 is a lucky number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12227) 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, 343 + ... + 376.

It is an arithmetic number, because the mean of its divisors is an integer number (3240).

212223 is an apocalyptic number.

12223 is a deficient number, since it is larger than the sum of its proper divisors (737).

12223 is an equidigital number, since it uses as much as digits as its factorization.

12223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736.

The product of its digits is 24, while the sum is 10.

The square root of 12223 is about 110.5576772549. The cubic root of 12223 is about 23.0352327055.

The spelling of 12223 in words is "twelve thousand, two hundred twenty-three", and thus it is an iban number.

Divisors: 1 17 719 12223