Base | Representation |
---|---|
bin | 111011111011111… |
… | …0100010101110011 |
3 | 12012011021112101101 |
4 | 1313313310111303 |
5 | 13104321333021 |
6 | 531321145231 |
7 | 100560150364 |
oct | 16767642563 |
9 | 5164245341 |
10 | 2011121011 |
11 | 942252a89 |
12 | 48162b217 |
13 | 26086c243 |
14 | 151151b6b |
15 | bb85ca91 |
hex | 77df4573 |
2011121011 has 4 divisors (see below), whose sum is σ = 2011239832. Its totient is φ = 2011002192.
The previous prime is 2011121009. The next prime is 2011121033. The reversal of 2011121011 is 1101211102.
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.
It is a cyclic number.
It is not a de Polignac number, because 2011121011 - 21 = 2011121009 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (2011121071) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28746 + ... + 69631.
It is an arithmetic number, because the mean of its divisors is an integer number (502809958).
Almost surely, 22011121011 is an apocalyptic number.
2011121011 is a deficient number, since it is larger than the sum of its proper divisors (118821).
2011121011 is an equidigital number, since it uses as much as digits as its factorization.
2011121011 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 118820.
The product of its (nonzero) digits is 4, while the sum is 10.
The square root of 2011121011 is about 44845.5238680518. The cubic root of 2011121011 is about 1262.2520007728.
Adding to 2011121011 its reverse (1101211102), we get a palindrome (3112332113).
Subtracting from 2011121011 its reverse (1101211102), we obtain a palindrome (909909909).
The spelling of 2011121011 in words is "two billion, eleven million, one hundred twenty-one thousand, eleven".
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