A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2223000 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 13 15 18 19 20 24 25 26 30 36 38 39 40 45 50 52 57 60 65 72 75 76 78 90 95 100 104 114 117 120 125 130 150 152 156 171 180 190 195 200 225 228 234 247 250 260 285 300 312 325 342 360 375 380 390 450 456 468 475 494 500 520 570 585 600 650 684 741 750 760 780 855 900 936 950 975 988 1,000 1,125 1,140 1,170 1,235 1,300 1,368 1,425 1,482 1,500 1,560 1,625 1,710 1,800 1,900 1,950 1,976 2,223 2,250 2,280 2,340 2,375 2,470 2,600 2,850 2,925 2,964 3,000 3,250 3,420 3,705 3,800 3,900 4,275 4,446 4,500 4,680 4,750 4,875 4,940 5,700 5,850 5,928 6,175 6,500 6,840 7,125 7,410 7,800 8,550 8,892 9,000 9,500 9,750 9,880 11,115 11,400 11,700 12,350 13,000 14,250 14,625 14,820 17,100 17,784 18,525 19,000 19,500 21,375 22,230 23,400 24,700 28,500 29,250 29,640 30,875 34,200 37,050 39,000 42,750 44,460 49,400 55,575 57,000 58,500 61,750 74,100 85,500 88,920 92,625 111,150 117,000 123,500 148,200 171,000 185,250 222,300 247,000 277,875 370,500 444,600 555,750 741,000 1,111,500 and 2,223,000, with no remainder.
Since 2,223,000 cannot be divided by just 1 and 2,223,000, it is not a prime number.