Base | Representation |
---|---|
bin | 10110100100111010… |
… | …11111101000010011 |
3 | 1011021201120120211211 |
4 | 23102131133220103 |
5 | 144310421203213 |
6 | 5322424320551 |
7 | 606236536321 |
oct | 132235375023 |
9 | 34251516754 |
10 | 12120881683 |
11 | 515aa15899 |
12 | 2423313157 |
13 | 11b2209b51 |
14 | 82dac6d11 |
15 | 4ae19c53d |
hex | 2d275fa13 |
12120881683 has 2 divisors, whose sum is σ = 12120881684. Its totient is φ = 12120881682.
The previous prime is 12120881681. The next prime is 12120881687. The reversal of 12120881683 is 38618802121.
It is a weak prime.
It is an emirp because it is prime and its reverse (38618802121) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 12120881683 - 21 = 12120881681 is a prime.
Together with 12120881681, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (12120881681) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060440841 + 6060440842.
It is an arithmetic number, because the mean of its divisors is an integer number (6060440842).
Almost surely, 212120881683 is an apocalyptic number.
12120881683 is a deficient number, since it is larger than the sum of its proper divisors (1).
12120881683 is an equidigital number, since it uses as much as digits as its factorization.
12120881683 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 36864, while the sum is 40.
The spelling of 12120881683 in words is "twelve billion, one hundred twenty million, eight hundred eighty-one thousand, six hundred eighty-three".
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