Base | Representation |
---|---|
bin | 11010010110001… |
… | …01110010101000 |
3 | 120101212112020202 |
4 | 31023011302220 |
5 | 423034323422 |
6 | 33533011332 |
7 | 5322364160 |
oct | 1513056250 |
9 | 511775222 |
10 | 221011112 |
11 | 103833a13 |
12 | 62023b48 |
13 | 36a32a0a |
14 | 214d15a0 |
15 | 14609b92 |
hex | d2c5ca8 |
221011112 has 32 divisors (see below), whose sum is σ = 477019200. Its totient is φ = 94034304.
The previous prime is 221011103. The next prime is 221011123. The reversal of 221011112 is 211110122.
It is a junction number, because it is equal to n+sod(n) for n = 221011093 and 221011102.
It is an unprimeable number.
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 in 7 ways as a sum of consecutive naturals, for example, 6413 + ... + 21980.
It is an arithmetic number, because the mean of its divisors is an integer number (14906850).
Almost surely, 2221011112 is an apocalyptic number.
It is an amenable number.
221011112 is an abundant number, since it is smaller than the sum of its proper divisors (256008088).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
221011112 is a wasteful number, since it uses less digits than its factorization.
221011112 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 28545 (or 28541 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 11.
The square root of 221011112 is about 14866.4424796250. The cubic root of 221011112 is about 604.6044925423.
Adding to 221011112 its reverse (211110122), we get a palindrome (432121234).
The spelling of 221011112 in words is "two hundred twenty-one million, eleven thousand, one hundred twelve".
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