Zimbabwe used to have a Z$100,000,000,000,000 note, until the end of April 2016, but it was worth only about $0.40.
As one of the greatest episodes of hyperinflation in modern times occurred in Zimbabwe from the 1980s to 2009, the country's 100 Trillion Dollars note became one of the highest denominations of currency in circulation in history.
The political turmoil following the declaration of the Zimbabwean Republic in 1980 led to the rapid devaluation of Zimbabwean money. Initially valued at par with US currency, inflation rapidly eroded its value over the next three decades, reaching an annual rate of 11,000,000% in 2008 and a peak monthly rate of 80,000,000,000% in November 2009. The government suspended production of its currency in 2009. Today the government operates the national economy using the US dollar and other currencies as a medium of exchange.
Zimbabwean money, even in the denomination of 100 Trillion, is not recognized in official currency exchange markets and does not have an official exchange rate with the dollar or other national currencies. However, the Zimbabwe 100 Trillion Dollars banknote continues to rise in numismatic value because of its historical significance and demand among collectors.