Unfortunately the bar was built on long int so it overflowed 23 times and landed on about 1.2 billion.
One billion, two-hundred fifteen million, seven-hundred fifty-two thousand, two-hundred-something bottles of beer on the wall, one billion, two-hundred fifteen million, seven-hundred fifty-two thousand, two-hundred-something bottles of beer! Take one down, pass it around...
Well, silly me, I should have specified that I did my calculation with signed long, though it shouldn't affect the outcome much given my rounding at the hundreds.