How many individuals globally had a net worth of at least $1 billion in 2012?

In 2012, the total number of individuals worldwide with a net worth of at least $1 billion was accurately reported to be 1,226. This figure reflects the growing influence of billionaires in various sectors, including technology, finance, and commodities, during a period of economic recovery following the global financial crisis. The data on the number of billionaires is typically compiled by financial publications and organizations that track wealth and investments, which confirmed that the number of billionaires reached this specific milestone during that year.

The other options represent figures that are either too high or too low compared to the documented total, as those estimates do not align with the financial analysis and reports available at the time.