Base | Representation |
---|---|
bin | 11001010011000… |
… | …10010110100001 |
3 | 112210022122112021 |
4 | 30221202112201 |
5 | 413311341301 |
6 | 33020301441 |
7 | 5154541132 |
oct | 1451422641 |
9 | 483278467 |
10 | 212215201 |
11 | a9876470 |
12 | 5b0a1881 |
13 | 34c73233 |
14 | 20281c89 |
15 | 1396d8a1 |
hex | ca625a1 |
212215201 has 8 divisors (see below), whose sum is σ = 232471008. Its totient is φ = 192120000.
The previous prime is 212215189. The next prime is 212215207. The reversal of 212215201 is 102512212.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 212215201 - 25 = 212215169 is a prime.
It is a super-3 number, since 3×2122152013 (a number of 26 digits) contains 333 as substring.
It is not an unprimeable number, because it can be changed into a prime (212215207) 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, 37375 + ... + 42676.
It is an arithmetic number, because the mean of its divisors is an integer number (29058876).
Almost surely, 2212215201 is an apocalyptic number.
It is an amenable number.
212215201 is a deficient number, since it is larger than the sum of its proper divisors (20255807).
212215201 is a wasteful number, since it uses less digits than its factorization.
212215201 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 80303.
The product of its (nonzero) digits is 80, while the sum is 16.
The square root of 212215201 is about 14567.6079367891. The cubic root of 212215201 is about 596.4748863306.
Adding to 212215201 its reverse (102512212), we get a palindrome (314727413).
The spelling of 212215201 in words is "two hundred twelve million, two hundred fifteen thousand, two hundred one".
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