Base | Representation |
---|---|
bin | 11001010001100… |
… | …00101111101101 |
3 | 112202221022210210 |
4 | 30220300233231 |
5 | 413233341023 |
6 | 33012053033 |
7 | 5153033553 |
oct | 1450605755 |
9 | 482838723 |
10 | 212012013 |
11 | a9747844 |
12 | 5b004179 |
13 | 34c018c5 |
14 | 2022bbd3 |
15 | 1392d593 |
hex | ca30bed |
212012013 has 16 divisors (see below), whose sum is σ = 299072000. Its totient is φ = 133222320.
The previous prime is 212011993. The next prime is 212012033. The reversal of 212012013 is 310210212.
It is an interprime number because it is at equal distance from previous prime (212011993) and next prime (212012033).
It is not a de Polignac number, because 212012013 - 28 = 212011757 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 212012013.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (212012033) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1998 + ... + 20688.
It is an arithmetic number, because the mean of its divisors is an integer number (18692000).
Almost surely, 2212012013 is an apocalyptic number.
It is an amenable number.
212012013 is a deficient number, since it is larger than the sum of its proper divisors (87059987).
212012013 is a wasteful number, since it uses less digits than its factorization.
212012013 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 18912.
The product of its (nonzero) digits is 24, while the sum is 12.
The square root of 212012013 is about 14560.6323008309. The cubic root of 212012013 is about 596.2844581873.
Adding to 212012013 its reverse (310210212), we get a palindrome (522222225).
The spelling of 212012013 in words is "two hundred twelve million, twelve thousand, thirteen".
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