Base | Representation |
---|---|
bin | 101111100110011101… |
… | …0001110110110101001 |
3 | 100202212000211221110211 |
4 | 1133030322032312221 |
5 | 3133322322040230 |
6 | 114543221341121 |
7 | 10246105134211 |
oct | 1371472166651 |
9 | 322760757424 |
10 | 102222065065 |
11 | 3a39676650a |
12 | 17989b677a1 |
13 | 9840c98443 |
14 | 4d3a203241 |
15 | 29d436442a |
hex | 17cce8eda9 |
102222065065 has 4 divisors (see below), whose sum is σ = 122666478084. Its totient is φ = 81777652048.
The previous prime is 102222065063. The next prime is 102222065069. The reversal of 102222065065 is 560560222201.
It is a happy number.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560560222201 = 7 ⋅80080031743.
It can be written as a sum of positive squares in 2 ways, for example, as 19414520896 + 82807544169 = 139336^2 + 287763^2 .
It is a cyclic number.
It is not a de Polignac number, because 102222065065 - 21 = 102222065063 is a prime.
It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (102222065063) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10222206502 + ... + 10222206511.
It is an arithmetic number, because the mean of its divisors is an integer number (30666619521).
Almost surely, 2102222065065 is an apocalyptic number.
It is an amenable number.
102222065065 is a deficient number, since it is larger than the sum of its proper divisors (20444413019).
102222065065 is an equidigital number, since it uses as much as digits as its factorization.
102222065065 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 20444413018.
The product of its (nonzero) digits is 14400, while the sum is 31.
Adding to 102222065065 its reverse (560560222201), we get a palindrome (662782287266).
The spelling of 102222065065 in words is "one hundred two billion, two hundred twenty-two million, sixty-five thousand, sixty-five".
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