12006217 has 2 divisors, whose sum is σ = 12006218. Its totient is φ = 12006216.

The previous prime is 12006193. The next prime is 12006223. The reversal of 12006217 is 71260021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7929856 + 4076361 = 2816^2 + 2019^2 .

It is a cyclic number.

It is not a de Polignac number, because 12006217 - 2¹⁹ = 11481929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12006194 and 12006203.

It is not a weakly prime, because it can be changed into another prime (12006017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6003108 + 6003109.

It is an arithmetic number, because the mean of its divisors is an integer number (6003109).

Almost surely, 2^12006217 is an apocalyptic number.

It is an amenable number.

12006217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12006217 is an equidigital number, since it uses as much as digits as its factorization.

12006217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 12006217 is about 3464.9988455987. The cubic root of 12006217 is about 228.9823788428.

Adding to 12006217 its reverse (71260021), we get a palindrome (83266238).

The spelling of 12006217 in words is "twelve million, six thousand, two hundred seventeen".