Compare 21212 vs 21221

Property	21212	21221
Type	composite number	prime
Unique factors	2	1
Total factors	3	1
Prime factorization	2² × 5303¹	21221¹
Prime factorization	2 × 2 × 5303	21221
Divisors count	6	2
Divisors	1, 2, 4, 5303, 10606, 21212	1, 21221
Number of properties	0	6
Chen primes		1172nd
Isolated primes		1665th
Primes		2386th
Pythagorean primes		1184th
Sexy primes (1st member)		723rd
Sophie germain primes		346th
Roman numberals
Base 2	101001011011100₂	101001011100101₂
Base 3	1002002122₃	1002002222₃
Base 4	11023130₄	11023211₄
Base 5	1134322₅	1134341₅
Base 6	242112₆	242125₆
Base 7	115562₇	115604₇
Base 8	51334₈	51345₈
Base 9	32078₉	32088₉
Base 10	21212₁₀	21221₁₀
Base 11	14a34₁₁	14a42₁₁
Base 12	10338₁₂	10345₁₂
Base 13	9869₁₃	9875₁₃
Base 14	7a32₁₄	7a3b₁₄
Base 15	6442₁₅	644b₁₅
Base 16	52dc₁₆	52e5₁₆