The World Bank classifies 40 countries as 'small states' on the basis of having a population smaller than 1.5 million (though, oddly, this list excludes some rich tiny countries like Luxembourg and Estonia). Some are as small as 11,000 (Tuvalu), and the total population of all of them put together is only 20 million. Nevertheless, each of these countries has full 'sovereignty' - meaning that the organisations recognised as ruling over the populations within these territories have special and equal rights under international law: to exploit the resources that fall within their exclusive economic zone, for example, or to vote on matters of global importance at the United Nations, or to make up their own regulations about corporate taxation and secrecy.
This is absurd, but also far from harmless.