【Question 11】
There is a six-digit number $22014 \square$ that can be divided by 9, and at the same time, it can also be divided by 22. What is this six-digit number? $\qquad$
【Analysis and Solution】
Number Theory, Divisibility.
Let this six-digit number be $\overline{a 2014 b}$;
Since $\overline{a 2014 b}$ can be divided by $22=2 \times 11$; thus $\overline{a 2014 b}$ can be divided by 11;
Also, since $\overline{a 2014 b}$ can be divided by 9; thus $\overline{a 2014 b}$ can be divided by $[9,11]=9 \times 11=99$;
According to the divisibility rule of 99, $\overline{a 2}+01+\overline{4 b}=\overline{a b}+43$ can be divided by 99;
$$
\overline{a b}=99-43=56 \text {; }
$$

And 520146 can also be divided by 2;
Therefore, this six-digit number is 520146.