How many zeroes are there in one trillion?
The number 1 trillion has 12 zeroes. Written in numerical notation, 1 trillion is equivalent to 1,000,000,000,000. Ã‚ It is also sometimes called one thousand billion and is written in scientific notation as 1Ãƒâ€”1012 or just 1012. The word billion comes from the French word trillion which referred to ‘Ëœtri + (m)illion’â„¢.