there is about 2.1 million christianaty worshipers today
Christianity is the most popular religion in the world, at 2.1 billion members (33% of the world), followed by Islam with 1.5 billion (21%).
About 21 percent of the World's 6.6 billion residents.
11.2 Billion
0.0952
10.5 billion.
As a number: 21,000,000,000 = 21 billion
21
0.1429
1.28 x 10 ^ 21 KG
"billion" = 109"trillion" = 1012"billion trillion" = 1021
5.9725e+21
$7,350,000,000.00