IP Address Converter

Question

There is IP address: 66.102.13.19, and from this address as that received this address

http://1113984275

But how? And how I can make this

Answer 1

Simple int to IP conversion for bash

dec2ip ()
{
   local v=$1
   local i1=$((v>>24&255))
   local i2=$((v>>16&255))
   local i3=$((v>>8&255))
   local i4=$((v&255))
   printf '%d.%d.%d.%d\n' $i1 $i2 $i3 $i4
}