This means that he would have had to have had hundreds of children, and we know that his son Jochi had 40 sons and his grandson Kublai Khan had 22 legitimate sons.
Unfortunately for Kublai Khan, he was not as feared as his great-grandfather had once been, and Mongolia would eventually begin to break off into civil wars.
Finally, there was Kublai's 1292 invasion of Java, which ended with the victorious Mongols so riddled with disease that they were forced to retreat after a single year.