1,111,111,111,111,111,111,111

Number
$1 \, 111 \, 111 \, 111 \, 111 \, 111 \, 111 \, 111$ is:


 * $11^2 \times 23 \times 4093 \times 8779 \times 21649 \times 513239$


 * The $22$nd repunit