Oh wait I just re-read your note, sorry
:S
for this, it fully depends on the keyboard. I couldn't find it in Spanish or English keyboard. Japanese keyboard however, does have it, it comes in the abbreviated keyboard as part of the 1& -> 記号 Options. So you are going to check the keyboards that you have to see if one of them has it I guess... (You could try installing the japanese one although only for this, seems a bit much)