1,000,000,000,000 (one million million; 1012; SI prefix tera) - increasingly common meaning in English language usage.
1,000,000,000,000,000,000 (one million million million; 1018; SI prefix exa) - increasingly rare meaning in English language usage but frequent in many other languages.
This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.