Base | Representation |
---|---|
bin | 11010010110111… |
… | …10100000000001 |
3 | 120102001200002020 |
4 | 31023132200001 |
5 | 423101043241 |
6 | 33535112053 |
7 | 5323265223 |
oct | 1513364001 |
9 | 512050066 |
10 | 221112321 |
11 | 1038a2a61 |
12 | 62072629 |
13 | 36a69ac1 |
14 | 2151a413 |
15 | 14629b66 |
hex | d2de801 |
221112321 has 8 divisors (see below), whose sum is σ = 301672800. Its totient is φ = 143980032.
The previous prime is 221112313. The next prime is 221112337. The reversal of 221112321 is 123211122.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 221112321 - 23 = 221112313 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 221112321.
It is not an unprimeable number, because it can be changed into a prime (221112361) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 856896 + ... + 857153.
It is an arithmetic number, because the mean of its divisors is an integer number (37709100).
Almost surely, 2221112321 is an apocalyptic number.
It is an amenable number.
221112321 is a deficient number, since it is larger than the sum of its proper divisors (80560479).
221112321 is a wasteful number, since it uses less digits than its factorization.
221112321 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1714095.
The product of its digits is 48, while the sum is 15.
The square root of 221112321 is about 14869.8460314826. The cubic root of 221112321 is about 604.6967685631.
Adding to 221112321 its reverse (123211122), we get a palindrome (344323443).
The spelling of 221112321 in words is "two hundred twenty-one million, one hundred twelve thousand, three hundred twenty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •