text: Q:
  
  How to create the following symbol?
  
  Is it possible to create the following symbol,
  
  Circled 1 (or any number or letter).
  
  The output should be something like \textregistered except R being replaced by 1 (or the corresponding number or letter, as the case may be).
  
  A:
  
  Or may be this:
  \documentclass{article}
  \usepackage{textcomp}
  \usepackage{tikz}
  \newcommand{\mycircled}[1]{%
   \begin{tikzpicture}[baseline={(char.base)}]
     \node[draw,circle,inner sep=0.5pt] (char){#1};
   \end{tikzpicture}
   }
  \begin{document}
    \textcircled{9} %% Works good upto a number of 9 (single digits)
    \mycircled{12} \mycircled{R} \mycircled{123}
  \end{document}
  
  With constant sized circle:
  \documentclass{article}
  \usepackage{tikz}
  \newcommand{\mycircled}[1]{%
   \begin{tikzpicture}[baseline={(char.base)}]
     \node (char) {#1};
     \node[draw,circle,minimum size=16pt,inner sep=0pt,overlay] (char.center){};
   \end{tikzpicture}
   }
  \begin{document}
    \mycircled{R} \mycircled{123}
  \end{document}
  
  