Base | Representation |
---|---|
bin | 1101010110100… |
… | …10001100100101 |
3 | 21210202200212022 |
4 | 12223102030211 |
5 | 212133310041 |
6 | 15040432525 |
7 | 2530032554 |
oct | 653221445 |
9 | 253680768 |
10 | 112010021 |
11 | 58254872 |
12 | 31618745 |
13 | 1a28a226 |
14 | 10c39d9b |
15 | 9c7824b |
hex | 6ad2325 |
112010021 has 2 divisors, whose sum is σ = 112010022. Its totient is φ = 112010020.
The previous prime is 112010011. The next prime is 112010029. The reversal of 112010021 is 120010211.
It is an a-pointer prime, because the next prime (112010029) can be obtained adding 112010021 to its sum of digits (8).
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 79405921 + 32604100 = 8911^2 + 5710^2 .
It is an emirp because it is prime and its reverse (120010211) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 112010021 - 218 = 111747877 is a prime.
It is a Chen prime.
It is a junction number, because it is equal to n+sod(n) for n = 112009990 and 112010008.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (112010029) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56005010 + 56005011.
It is an arithmetic number, because the mean of its divisors is an integer number (56005011).
Almost surely, 2112010021 is an apocalyptic number.
It is an amenable number.
112010021 is a deficient number, since it is larger than the sum of its proper divisors (1).
112010021 is an equidigital number, since it uses as much as digits as its factorization.
112010021 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 4, while the sum is 8.
The square root of 112010021 is about 10583.4786814166. The cubic root of 112010021 is about 482.0428286180.
Adding to 112010021 its reverse (120010211), we get a palindrome (232020232).
The spelling of 112010021 in words is "one hundred twelve million, ten thousand, twenty-one".
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