2+2:1

It appears that the expression "2+2:1" might be intended to represent a mathematical calculation. Assuming you mean to perform addition and division, and considering common notation, the expression could be interpreted as:

\[ 2 + \frac{2}{1} \]

Calculating this:

\[ 2 + 2 = 4 \]

So, the result is 4.

If you meant something different, please clarify!