So this is where the inspiration for the Queen in the film Aliens comes from then! The Queen Termite is a giant egg laying machine, laying about 30,000 eggs a day. Her partner, the King Termite, stays with her throughout her life, and mates with her continuously.
Her abdomen is so swolen, that she is unable to move or look after herself, so she has a whole chamber of servants that feed and clean her. They also look after the eggs she produces.
Unlike the Queen Alien, she is unable to detach herself from her egg sack, so in the event of an ant raid, she is completely helpless and unable to defend herself. This can result in her being carried off by hundreds of ants to become a living feast.
Most of the time, though, she manages to live between 15-20 years. She normally grows to about 4 inches long.
For more Termite information, have a look at the termite Wikipedia page.