Base | Representation |
---|---|
bin | 101101101101000111001101… |
… | …100000010010000111111101 |
3 | 222100201120122200111010211210 |
4 | 231231013031200102013331 |
5 | 202321341002311242341 |
6 | 1551303422510035033 |
7 | 60224440002210024 |
oct | 5555071540220775 |
9 | 870646580433753 |
10 | 201012212212221 |
11 | 59059889464013 |
12 | 1a66561b1a8a79 |
13 | 88214a7660ca7 |
14 | 378d085d298bb |
15 | 1838bc79e3c16 |
hex | b6d1cd8121fd |
201012212212221 has 8 divisors (see below), whose sum is σ = 268020134424000. Its totient is φ = 134006215737632.
The previous prime is 201012212212187. The next prime is 201012212212237. The reversal of 201012212212221 is 122212212210102.
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 201012212212221 - 29 = 201012212211709 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (201012212212261) 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, 481190721 + ... + 481608278.
It is an arithmetic number, because the mean of its divisors is an integer number (33502516803000).
Almost surely, 2201012212212221 is an apocalyptic number.
It is an amenable number.
201012212212221 is a deficient number, since it is larger than the sum of its proper divisors (67007922211779).
201012212212221 is an equidigital number, since it uses as much as digits as its factorization.
201012212212221 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 962868595.
The product of its (nonzero) digits is 256, while the sum is 21.
Adding to 201012212212221 its reverse (122212212210102), we get a palindrome (323224424422323).
The spelling of 201012212212221 in words is "two hundred one trillion, twelve billion, two hundred twelve million, two hundred twelve thousand, two hundred twenty-one".
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