Citibank is a global financial institution that provides a wide range of banking services, including personal banking, credit cards, and investment services. Founded in 1812, it is one of the largest banks in the world, operating in numerous countries and serving millions of customers. The bank is a subsidiary of Citigroup, a multinational corporation that offers financial services worldwide. Citibank is known for its innovative digital banking solutions and extensive network of ATMs and branches, making it accessible for both individual and business clients.