Base | Representation |
---|---|
bin | 1001100100000… |
… | …01001110101101 |
3 | 12120221122122220 |
4 | 10302001032231 |
5 | 131014033401 |
6 | 11543225553 |
7 | 1662603522 |
oct | 462011655 |
9 | 176848586 |
10 | 80221101 |
11 | 41312334 |
12 | 22a482b9 |
13 | 13809c0c |
14 | a923149 |
15 | 7099336 |
hex | 4c813ad |
80221101 has 8 divisors (see below), whose sum is σ = 109449120. Its totient is φ = 52236912.
The previous prime is 80221093. The next prime is 80221111. The reversal of 80221101 is 10112208.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 80221101 - 23 = 80221093 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (80221111) 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, 310806 + ... + 311063.
It is an arithmetic number, because the mean of its divisors is an integer number (13681140).
Almost surely, 280221101 is an apocalyptic number.
It is an amenable number.
80221101 is a deficient number, since it is larger than the sum of its proper divisors (29228019).
80221101 is a wasteful number, since it uses less digits than its factorization.
80221101 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 621915.
The product of its (nonzero) digits is 32, while the sum is 15.
The square root of 80221101 is about 8956.6233034554. The cubic root of 80221101 is about 431.2835292561.
Adding to 80221101 its reverse (10112208), we get a palindrome (90333309).
The spelling of 80221101 in words is "eighty million, two hundred twenty-one thousand, one hundred one".
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