I would argue none of us have any idea if there is a "trillionaire" in the world because we are notoriously bad at guessing someone's total net worth.

As support, I would point you to this 10 year old article on Moammar Gadhafi, where he was estimated to actually be worth roughly $200b USD - an unheard of number in 2011. https://www.forbes.com/sites/edwindurgy/2011/10/25/did-moamm...

This week, if Bezos were not divorced, he would be worth $300b USD: https://www.celebritynetworth.com/articles/billionaire-news/...

And finally, the ProPublica Peter Thiel $5b USD ROTH IRA is worth *double what Forbes thought Thiels entire net worth is per the 2020 Forbes Billionaire List* (he is on page 3... look at the massive jump in the animated graph!): https://www.forbes.com/billionaires/

That said, the IRS had 20 years of tax returns stolen from it which would detail the richest Americans, and so it is unlikely anyone in the USA is a trillionaire.