51210
There are only 20 playable levels in Orb 2
The code is 51210. But this is the end screen. The last playable level is level 20 (code 19094 and hard to beat).
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There are only 15 levels on Orb. See the related question.
It is not a playable level. Level 20 is impractically difficult but can be beaten.
The Code for Level 20 is 305883
level 20 is max with out the dlc
There are 20 playable levels on Orb 2 and 20 similar levels on Orb 2 TNL.
level 14 is:80369 level 15 is:73108 level 17 is:41205 level 19 is:27883 level 20 is:19094 level 21 is:51210
The last playable level is level 20: 19094 (last level) The passcode for level 21 is 51210, "You Have Won" (unlock all bonus games)
there is no passcode for level 16 once you complete level 15 you win and how you win is you go down all the way to the bottom and then you go across and up though the crate and the yellow dot and then up and left across into the middle of both pipes and then up and across left and leave the ball there and pick up the crate and move it onto the yellow dot. then go down and become yellow. go back down the two pipes and all the way to the bottom where you pass through the yellow wall and up to the goal
There is no level 22 on Orb2 or Orb2 TNL. There are Bonus Levels including belts and endless levels. There is no level 22. There is not actually a level 21 -- it is the end screen. There are 20 playable levels and 5 bonus challenge levels on the main menu. (to access, enter the level 21 code, which is 51210)