Base | Representation |
---|---|
bin | 1100010110100111100… |
… | …1101010101011110111 |
3 | 202021210200102021012110 |
4 | 3011221321222223313 |
5 | 11434121402402411 |
6 | 241255220022103 |
7 | 21222155163021 |
oct | 3055171525367 |
9 | 667720367173 |
10 | 212230122231 |
11 | 8200840a036 |
12 | 3516b531933 |
13 | 170230567aa |
14 | a3b44c3011 |
15 | 57c1eee2a6 |
hex | 3169e6aaf7 |
212230122231 has 16 divisors (see below), whose sum is σ = 283535384544. Its totient is φ = 141205929984.
The previous prime is 212230122199. The next prime is 212230122241. The reversal of 212230122231 is 132221032212.
It is not a de Polignac number, because 212230122231 - 25 = 212230122199 is a prime.
It is a super-3 number, since 3×2122301222313 (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
It is a junction number, because it is equal to n+sod(n) for n = 212230122198 and 212230122207.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (212230122241) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8075845 + ... + 8102081.
It is an arithmetic number, because the mean of its divisors is an integer number (17720961534).
Almost surely, 2212230122231 is an apocalyptic number.
212230122231 is a deficient number, since it is larger than the sum of its proper divisors (71305262313).
212230122231 is a wasteful number, since it uses less digits than its factorization.
212230122231 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 31490.
The product of its (nonzero) digits is 576, while the sum is 21.
Adding to 212230122231 its reverse (132221032212), we get a palindrome (344451154443).
The spelling of 212230122231 in words is "two hundred twelve billion, two hundred thirty million, one hundred twenty-two thousand, two hundred thirty-one".
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