This infographic speaks for itself, but in case you're Fox News and need it spelled out, the so-called "Trillion-Dollar Platinum Coin" won't weigh 17,774 tons, because, for one thing, there isn't nearly that much platinum in the whole world.
For another, that's not how fiat money works.
As Daily Intel notes, Fox probably borrowed the idea for these staggeringly (purposely?) misleading statistics from the NRCC, which just yesterday claimed "the amount of platinum needed to mint a coin worth $1 trillion would sink the Titanic." What even.