Base | Representation |
---|---|
bin | 10110101111110111… |
… | …00010000110101011 |
3 | 1011112010020111122012 |
4 | 23113323202012223 |
5 | 200002414022334 |
6 | 5335503150135 |
7 | 611432513621 |
oct | 132773420653 |
9 | 34463214565 |
10 | 12212642219 |
11 | 51a7799948 |
12 | 2449ba534b |
13 | 11c822721b |
14 | 83bd71511 |
15 | 4b72759ce |
hex | 2d7ee21ab |
12212642219 has 2 divisors, whose sum is σ = 12212642220. Its totient is φ = 12212642218.
The previous prime is 12212642213. The next prime is 12212642269. The reversal of 12212642219 is 91224621221.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 12212642219 - 220 = 12211593643 is a prime.
It is a super-2 number, since 2×122126422192 (a number of 21 digits) contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (12212642213) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106321109 + 6106321110.
It is an arithmetic number, because the mean of its divisors is an integer number (6106321110).
Almost surely, 212212642219 is an apocalyptic number.
12212642219 is a deficient number, since it is larger than the sum of its proper divisors (1).
12212642219 is an equidigital number, since it uses as much as digits as its factorization.
12212642219 is an evil number, because the sum of its binary digits is even.
The product of its digits is 6912, while the sum is 32.
The spelling of 12212642219 in words is "twelve billion, two hundred twelve million, six hundred forty-two thousand, two hundred nineteen".
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