Of that $107 trillion you quote, $13 trillion is for fixed dollar amount of bonds which we can print up a small stack of billion dollar bills and pay them off (along with the associated hyperinflation). The rest is primarily for Social Security and Medicare which are not fixed dollar amounts. Print up those billion dollar bills to inflate away the current debt and suddenly the average doctor's bill is in the millions of dollars for an office visit and the future obligations are in the quadrillions or quintillions of dollars instead of "mere" trillions.
Can you imagine being the first business asked to make change for the first billion dollar bill?