The word “Google”, in the Google logo originates from the misspelling of ‘googol’, which refers to 10100 (that is the number represented by a 1 followed by one-hundred zeros).
These special modifications of the Google logo are known as Google Doodles.
The company uses features that compliment and refer to specific holidays like Christmas, 4th of July, Mother’s Day etc.; birthdays of famous personalities like Albert Einstein, Leonardo Di Vinci, Edward Munch, etc.; and major events like the Olympics, Football World Cup, elections, The Royal Wedding etc.