Okay, it is actually Z$100 bn note (Zimbabwe dollars) and not USD. Zimbabwe recently launched this note against its 2.2 Million annual inflation rate (Yes, you heard that right) This is hyperinflation at its worst.
Even this note is barely sufficient to buy a loaf of bread. At present rates, it takes atleast Z$500 bn a day to survive!!!
Read the complete article here
So, if you wanna be a billionaire, go to Zimbabwe and find a job ;)