Base | Representation |
---|---|
bin | 1100010010101011001101 |
3 | 20001201001112 |
4 | 30102223031 |
5 | 1311102341 |
6 | 153021405 |
7 | 36250142 |
oct | 14225315 |
9 | 6051045 |
10 | 3222221 |
11 | 19009a2 |
12 | 10b4865 |
13 | 88a852 |
14 | 5dc3c9 |
15 | 439aeb |
hex | 312acd |
3222221 has 2 divisors, whose sum is σ = 3222222. Its totient is φ = 3222220.
The previous prime is 3222217. The next prime is 3222223. The reversal of 3222221 is 1222223.
3222221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 3222025 + 196 = 1795^2 + 14^2 .
It is a cyclic number.
It is not a de Polignac number, because 3222221 - 22 = 3222217 is a prime.
It is a Sophie Germain prime.
Together with 3222223, it forms a pair of twin primes.
It is a Chen prime.
It is a Curzon number.
It is a nialpdrome in base 10.
It is a junction number, because it is equal to n+sod(n) for n = 3222196 and 3222205.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (3222223) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1611110 + 1611111.
It is an arithmetic number, because the mean of its divisors is an integer number (1611111).
Almost surely, 23222221 is an apocalyptic number.
It is an amenable number.
3222221 is a deficient number, since it is larger than the sum of its proper divisors (1).
3222221 is an equidigital number, since it uses as much as digits as its factorization.
3222221 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 96, while the sum is 14.
The square root of 3222221 is about 1795.0545952700. The cubic root of 3222221 is about 147.7015687149.
Adding to 3222221 its reverse (1222223), we get a palindrome (4444444).
It can be divided in two parts, 322222 and 1, that added together give a palindrome (322223).
The spelling of 3222221 in words is "three million, two hundred twenty-two thousand, two hundred twenty-one".
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