Base | Representation |
---|---|
bin | 10110100100111100… |
… | …10100111101001111 |
3 | 1011021201222200110202 |
4 | 23102132110331033 |
5 | 144311000200421 |
6 | 5322433124115 |
7 | 606241436201 |
oct | 132236247517 |
9 | 34251880422 |
10 | 12121100111 |
11 | 5160054a0a |
12 | 24233b963b |
13 | 11b22853b3 |
14 | 82db42771 |
15 | 4ae1e210b |
hex | 2d2794f4f |
12121100111 has 2 divisors, whose sum is σ = 12121100112. Its totient is φ = 12121100110.
The previous prime is 12121100093. The next prime is 12121100129. The reversal of 12121100111 is 11100112121.
It is a balanced prime because it is at equal distance from previous prime (12121100093) and next prime (12121100129).
It is a cyclic number.
It is not a de Polignac number, because 12121100111 - 210 = 12121099087 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 12121100092 and 12121100101.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12121100171) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060550055 + 6060550056.
It is an arithmetic number, because the mean of its divisors is an integer number (6060550056).
Almost surely, 212121100111 is an apocalyptic number.
12121100111 is a deficient number, since it is larger than the sum of its proper divisors (1).
12121100111 is an equidigital number, since it uses as much as digits as its factorization.
12121100111 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 11.
Adding to 12121100111 its reverse (11100112121), we get a palindrome (23221212232).
The spelling of 12121100111 in words is "twelve billion, one hundred twenty-one million, one hundred thousand, one hundred eleven".
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