A trillion is an enormous number: 1,000,000,000,000. That's a one followed by twelve zeros, or a thousand billions. To help picture it, imagine that each second represents one dollar. It would take you about twelve days to count to a million seconds, and about 32 years to count to a billion seconds. But counting to a trillion seconds? That would take roughly 32,000 years.

Trillion is a number we usually encounter when discussing truly massive things: the national debt, the total wealth in the economy, or the number of stars in a galaxy. The United States government's budget is measured in trillions of dollars. Scientists estimate there are trillions of trees on Earth. Your body contains trillions of cells working together to keep you alive.

In many countries today, a trillion is understood as a million times a million. When you hear someone casually say “thanks a trillion,” they're exaggerating for effect, suggesting gratitude so large it can barely be measured. In reality, a trillion of almost anything is nearly impossible to visualize, which is exactly why the word captures our imagination.