Base | Representation |
---|---|
bin | 10011000010011111… |
… | …00100000000110101 |
3 | 222101100101010121102 |
4 | 21201033210000311 |
5 | 131413134413323 |
6 | 4410132055445 |
7 | 511203334166 |
oct | 114117440065 |
9 | 28340333542 |
10 | 10221404213 |
11 | 43757972a9 |
12 | 1b93164585 |
13 | c6b82a097 |
14 | 6cd71776d |
15 | 3ec544328 |
hex | 2613e4035 |
10221404213 has 2 divisors, whose sum is σ = 10221404214. Its totient is φ = 10221404212.
The previous prime is 10221404189. The next prime is 10221404231. The reversal of 10221404213 is 31240412201.
Together with next prime (10221404231) it forms an Ormiston pair, because they use the same digits, order apart.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 6234365764 + 3987038449 = 78958^2 + 63143^2 .
It is an emirp because it is prime and its reverse (31240412201) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 10221404213 - 218 = 10221142069 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (10221404233) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110702106 + 5110702107.
It is an arithmetic number, because the mean of its divisors is an integer number (5110702107).
Almost surely, 210221404213 is an apocalyptic number.
It is an amenable number.
10221404213 is a deficient number, since it is larger than the sum of its proper divisors (1).
10221404213 is an equidigital number, since it uses as much as digits as its factorization.
10221404213 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 384, while the sum is 20.
Adding to 10221404213 its reverse (31240412201), we get a palindrome (41461816414).
The spelling of 10221404213 in words is "ten billion, two hundred twenty-one million, four hundred four thousand, two hundred thirteen".
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