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Two hundred and twenty-two

In mathematics, 222 or two hundred (and) twenty-two is a repdigit.

Radii at 0° and approximately 222.49° divide a circle in the golden ratio.

                . . . . . .                
            . .             . ..           
         ..                      .         
      ...                          ..      
     .   ..                          .     
    .      ..                         .    
   .         ..                        .   
  .            ..                       .  
 .               ..                     .  
 .                 ..                    . 
 .                   .                   . 
 .                   .                   . 
 .                   .                   . 
  .                  .                  .  
  .                  .                  .  
   .                 .                ..   
    . .              .               .     
       .             .             .       
        . .          .          . .        
            . .      .       . .           
                . . . . . . .

The first triple repdigit in the square root of 222 is 222:

√222 =

14·89966442575133971933181604612395114023452166218124

73380574030119289350747022456370098357196526519656

52139396484012226637696242316850851449289924...

A prime reciprocal magic square based on 223 in base three has a magic constant of 222.

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