Base | Representation |
---|---|
bin | 10110100010011101… |
… | …00110101010010111 |
3 | 1011020021122220102201 |
4 | 23101032212222113 |
5 | 144240122413421 |
6 | 5320405145331 |
7 | 605566004155 |
oct | 132116465227 |
9 | 34207586381 |
10 | 12100201111 |
11 | 514a280209 |
12 | 24183bb247 |
13 | 11aab48a1b |
14 | 82b0623d5 |
15 | 4ac464b91 |
hex | 2d13a6a97 |
12100201111 has 2 divisors, whose sum is σ = 12100201112. Its totient is φ = 12100201110.
The previous prime is 12100201109. The next prime is 12100201121. The reversal of 12100201111 is 11110200121.
It is an a-pointer prime, because the next prime (12100201121) can be obtained adding 12100201111 to its sum of digits (10).
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 12100201111 - 21 = 12100201109 is a prime.
Together with 12100201109, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12100201121) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050100555 + 6050100556.
It is an arithmetic number, because the mean of its divisors is an integer number (6050100556).
Almost surely, 212100201111 is an apocalyptic number.
12100201111 is a deficient number, since it is larger than the sum of its proper divisors (1).
12100201111 is an equidigital number, since it uses as much as digits as its factorization.
12100201111 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 4, while the sum is 10.
Adding to 12100201111 its reverse (11110200121), we get a palindrome (23210401232).
The spelling of 12100201111 in words is "twelve billion, one hundred million, two hundred one thousand, one hundred eleven".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.081 sec. • engine limits •