In 2019, there are approximately 2,153 billionaires in the world , according to Forbes.

Most of these ultra-wealthy individuals are concentrated in countries like the US, China, Germany, Russia, and the United Kingdom. The US is home to the highest number of billionaires : an estimated 705. That's followed by China with an estimated 285 billionaires, and Germany with 146.

Some countries, however, are home to just one billionaire. Business Insider scoured Forbes' billionaires ranking to find which nations have just one billionaire, and then compared each billionaire's wealth to the gross domestic product (GDP) of the country, based on data from the World Bank.

In Liechtenstein, for example, the country's only billionaire is worth almost half of the GDP of the whole country. And the richest man in Eswatini (formerly Swaziland) is actually worth about $600 million more than his country's GDP.

Here are 13 countries that have only one billionaire.

See the rest of the story at Business Insider

See Also:

SEE ALSO: Comparing Forbes' lists of America's richest people from 1982 and 2019 shows how differently wealth is tracked today

DON'T MISS: The 15 richest people in India, ranked