Divisors of the Positive Integer 1221

1, 3, 11, 33, 37, 111, 407, 1221

Sum of all the Divisors of 1221, including itself

1824

Sum of the Proper Divisors of 1221

603

Properties of the number 1221

The integer 1221 is an odd number.
The integer 1221 is a Composite number.
603 is less than 1221, so 1221 is a deficient number.

The number 1221 as a Roman Numeral

MCCXXI

The number 1221 in various Numeral Systems

Base Representation
2:10011000101
3:1200020
4:103011
5:14341
6:5353
7:3363
8:2305
9:1606
10:1221
11:A10
12:859
13:72C
14:633
15:566
16:4C5
17:43E
18:3DF
19:375
20:311
21:2G3
22:2BB
23:272
24:22L
25:1NL
26:1KP
27:1I6
28:1FH
29:1D3
30:1AL
31:18C
32:165
33:140
34:11V
35:YV
36:XX