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BaseRepresentation
bin10111111000101
3121202221
42333011
5342404
6132341
750440
oct27705
917687
1012229
119208
1270b1
135749
144657
153954
hex2fc5

12229 has 4 divisors (see below), whose sum is σ = 13984. Its totient is φ = 10476.

The previous prime is 12227. The next prime is 12239. The reversal of 12229 is 92221.

It can be divided in two parts, 122 and 29, that added together give a palindrome (151).

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12229 - 21 = 12227 is a prime.

It is a Duffinian 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, 867 + ... + 880.

It is an arithmetic number, because the mean of its divisors is an integer number (3496).

212229 is an apocalyptic number.

It is an amenable number.

12229 is a deficient number, since it is larger than the sum of its proper divisors (1755).

12229 is an equidigital number, since it uses as much as digits as its factorization.

12229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754.

The product of its digits is 72, while the sum is 16.

The square root of 12229 is about 110.5848090833. The cubic root of 12229 is about 23.0390012508.

The spelling of 12229 in words is "twelve thousand, two hundred twenty-nine".

Divisors: 1 7 1747 12229