Base | Representation |
---|---|
bin | 10100101011001110… |
… | …01011011000100101 |
3 | 1001122120121221012021 |
4 | 22111213023120211 |
5 | 140213100310041 |
6 | 5033235423141 |
7 | 542032346152 |
oct | 122547133045 |
9 | 31576557167 |
10 | 11100010021 |
11 | 4786736901 |
12 | 2199454ab1 |
13 | 107b872889 |
14 | 7742a5229 |
15 | 44e746cd1 |
hex | 2959cb625 |
11100010021 has 4 divisors (see below), whose sum is σ = 11214443212. Its totient is φ = 10985576832.
The previous prime is 11100009979. The next prime is 11100010087. The reversal of 11100010021 is 12001000111.
11100010021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12001000111 = 17 ⋅705941183.
It can be written as a sum of positive squares in 2 ways, for example, as 6811200900 + 4288809121 = 82530^2 + 65489^2 .
It is a cyclic number.
It is not a de Polignac number, because 11100010021 - 215 = 11099977253 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 11100009986 and 11100010013.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (11100610021) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57216450 + ... + 57216643.
It is an arithmetic number, because the mean of its divisors is an integer number (2803610803).
Almost surely, 211100010021 is an apocalyptic number.
It is an amenable number.
11100010021 is a deficient number, since it is larger than the sum of its proper divisors (114433191).
11100010021 is an equidigital number, since it uses as much as digits as its factorization.
11100010021 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 114433190.
The product of its (nonzero) digits is 2, while the sum is 7.
Adding to 11100010021 its reverse (12001000111), we get a palindrome (23101010132).
The spelling of 11100010021 in words is "eleven billion, one hundred million, ten thousand, twenty-one".
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