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12226 = 26113
BaseRepresentation
bin10111111000010
3121202211
42333002
5342401
6132334
750434
oct27702
917684
1012226
119205
1270aa
135746
144654
153951
hex2fc2

12226 has 4 divisors (see below), whose sum is σ = 18342. Its totient is φ = 6112.

The previous prime is 12211. The next prime is 12227. The reversal of 12226 is 62221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62221 = 431447.

It can be written as a sum of positive squares in only one way, i.e., 10201 + 2025 = 101^2 + 45^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 10.

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 as a sum of consecutive naturals, namely, 3055 + ... + 3058.

212226 is an apocalyptic number.

12226 is a deficient number, since it is larger than the sum of its proper divisors (6116).

12226 is an equidigital number, since it uses as much as digits as its factorization.

12226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6115.

The product of its digits is 48, while the sum is 13.

The square root of 12226 is about 110.5712440013. The cubic root of 12226 is about 23.0371171322.

Adding to 12226 its reverse (62221), we get a palindrome (74447).

The spelling of 12226 in words is "twelve thousand, two hundred twenty-six".

Divisors: 1 2 6113 12226