Base | Representation |
---|---|
bin | 110000000001100010100110… |
… | …010000111101001111110001 |
3 | 1000200211200100111010122021201 |
4 | 300001202212100331033301 |
5 | 210140444340402223441 |
6 | 2025113255542051201 |
7 | 62326366523200063 |
oct | 6001424620751761 |
9 | 1020750314118251 |
10 | 211212101211121 |
11 | 6133160493348a |
12 | 1b8323a1419b01 |
13 | 90b12a5b1274a |
14 | 3a22a124c3733 |
15 | 19641a1281c31 |
hex | c018a643d3f1 |
211212101211121 has 8 divisors (see below), whose sum is σ = 223636472156160. Its totient is φ = 198787744676928.
The previous prime is 211212101211073. The next prime is 211212101211179. The reversal of 211212101211121 is 121112101212112.
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 211212101211121 - 213 = 211212101202929 is a prime.
It is a super-2 number, since 2×2112121012111212 (a number of 29 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (211212101211191) 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, 46404720 + ... + 50752558.
It is an arithmetic number, because the mean of its divisors is an integer number (27954559019520).
Almost surely, 2211212101211121 is an apocalyptic number.
It is an amenable number.
211212101211121 is a deficient number, since it is larger than the sum of its proper divisors (12424370945039).
211212101211121 is a wasteful number, since it uses less digits than its factorization.
211212101211121 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7205423.
The product of its (nonzero) digits is 32, while the sum is 19.
Adding to 211212101211121 its reverse (121112101212112), we get a palindrome (332324202423233).
Subtracting from 211212101211121 its reverse (121112101212112), we obtain a palindrome (90099999999009).
The spelling of 211212101211121 in words is "two hundred eleven trillion, two hundred twelve billion, one hundred one million, two hundred eleven thousand, one hundred twenty-one".
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