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BaseRepresentation
bin10111110111011
3121202120
42332323
5342334
6132323
750424
oct27673
917676
1012219
1191a9
1270a3
13573c
14464b
153949
hex2fbb

12219 has 4 divisors (see below), whose sum is σ = 16296. Its totient is φ = 8144.

The previous prime is 12211. The next prime is 12227. The reversal of 12219 is 91221.

It can be divided in two parts, 122 and 19, that added together give a palindrome (141).

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12211) and next prime (12227).

It is a cyclic number.

It is not a de Polignac number, because 12219 - 23 = 12211 is a prime.

It is a super-2 number, since 2×122192 = 298607922, which contains 22 as substring.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 12198 and 12207.

It is not an unprimeable number, because it can be changed into a prime (12211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2034 + ... + 2039.

It is an arithmetic number, because the mean of its divisors is an integer number (4074).

212219 is an apocalyptic number.

12219 is a deficient number, since it is larger than the sum of its proper divisors (4077).

12219 is an equidigital number, since it uses as much as digits as its factorization.

12219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4076.

The product of its digits is 36, while the sum is 15.

The square root of 12219 is about 110.5395856696. The cubic root of 12219 is about 23.0327196567.

The spelling of 12219 in words is "twelve thousand, two hundred nineteen".

Divisors: 1 3 4073 12219