A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2242152 can be evenly divided by 1 2 3 4 6 8 9 11 12 18 19 22 24 33 36 38 44 57 66 72 76 88 99 114 132 149 152 171 198 209 228 264 298 342 396 418 447 456 596 627 684 792 836 894 1,192 1,254 1,341 1,368 1,639 1,672 1,788 1,881 2,508 2,682 2,831 3,278 3,576 3,762 4,917 5,016 5,364 5,662 6,556 7,524 8,493 9,834 10,728 11,324 13,112 14,751 15,048 16,986 19,668 22,648 25,479 29,502 31,141 33,972 39,336 50,958 59,004 62,282 67,944 93,423 101,916 118,008 124,564 186,846 203,832 249,128 280,269 373,692 560,538 747,384 1,121,076 and 2,242,152, with no remainder.
Since 2,242,152 cannot be divided by just 1 and 2,242,152, it is not a prime number.