Which country once printed a 100-trillion-dollar banknote during hyperinflation?

Zimbabwe's hyperinflation resulted from collapsing economic production combined with the government printing enormous quantities of money, flooding the economy with currency far faster than goods and services could be produced to match it. As confidence in the currency evaporated, prices spiraled so fast that vendors sometimes changed prices multiple times a day, forcing the bank to print notes with increasingly absurd face values.

Argentina has had serious inflation crises but never reached hyperinflation levels this extreme, and Greece's 2010s troubles were a debt and austerity crisis rather than runaway currency printing.

Zimbabwe's old, nearly worthless notes have since become collector's items, letting people hold a literal 100-trillion-dollar bill that couldn't buy much more than a loaf of bread at the crisis's height.