Search a number
12241 is a prime number

12241 has 2 divisors, whose sum is σ = 12242. Its totient is φ = 12240.

The previous prime is 12239. The next prime is 12251. The reversal of 12241 is 14221.

Adding to 12241 its reverse (14221), we get a palindrome (26462).

It can be divided in two parts, 1224 and 1, that added together give a triangular number (1225 = T49).

12241 is an esthetic number in base 3, because in such base its adjacent digits differ by 1.

It is an a-pointer prime, because the next prime (12251) can be obtained adding 12241 to its sum of digits (10).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9216 + 3025 = 96^2 + 55^2 .

It is an emirp because it is prime and its reverse (14221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12241 - 21 = 12239 is a prime.

Together with 12239, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6120 + 6121.

It is an arithmetic number, because the mean of its divisors is an integer number (6121).

212241 is an apocalyptic number.

It is an amenable number.

12241 is a deficient number, since it is larger than the sum of its proper divisors (1).

12241 is an equidigital number, since it uses as much as digits as its factorization.

12241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16, while the sum is 10.

The square root of 12241 is about 110.6390527797. The cubic root of 12241 is about 23.0465346450.

The spelling of 12241 in words is "twelve thousand, two hundred forty-one", and thus it is an iban number.