12,567,456,132 - twelve billion , five hundred (and) sixty-seven million , four hundred (and) fifty-six thousand , one hundred (and) thirty-two. 'And' is used optionally only after the word 'hundred' or after a series of zeros: 1007 = one thousand (and) seven.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.