ZETTABYTE

- Either 1021 or 270 bytes

Z10 - E1 - T1 - T1 - A1 - B3 - Y4 - T1 - E1 has 23 points in Scrabble!

Z10 - E1 - T1 - T1 - A1 - B4 - Y3 - T1 - E1 has 23 points in Words with Friends!

Found in the OTCWL2014 and SOWPODS dictionaries