Consider the matrix $A = \begin{pmatrix} 2 & 1 \\ 1 & 2 \end{pmatrix}$. If $\lambda_{max}$ and $\lambda_{min}$ are the maximum and minimum eigenvalues of $A$, the condition number $\kappa(A) = \frac{\lambda_{max}}{\lambda_{min}}$ is ________ (answer in integer).