Base | Representation |
---|---|
bin | 10011110111010111… |
… | …111111010100100101 |
3 | 2001001112101212212201 |
4 | 103313113333110211 |
5 | 322141003131323 |
6 | 13444322414501 |
7 | 1353403054360 |
oct | 236727772445 |
9 | 61045355781 |
10 | 21330130213 |
11 | 9056336597 |
12 | 4173501431 |
13 | 201c131c32 |
14 | 1064c0b0d7 |
15 | 84c90d8ad |
hex | 4f75ff525 |
21330130213 has 8 divisors (see below), whose sum is σ = 24378204032. Its totient is φ = 18282284496.
The previous prime is 21330130201. The next prime is 21330130219. The reversal of 21330130213 is 31203103312.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 21330130213 - 25 = 21330130181 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (21330130219) 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 7 ways as a sum of consecutive naturals, for example, 263431 + ... + 334747.
It is an arithmetic number, because the mean of its divisors is an integer number (3047275504).
Almost surely, 221330130213 is an apocalyptic number.
It is an amenable number.
21330130213 is a deficient number, since it is larger than the sum of its proper divisors (3048073819).
21330130213 is an equidigital number, since it uses as much as digits as its factorization.
21330130213 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 114051.
The product of its (nonzero) digits is 324, while the sum is 19.
Adding to 21330130213 its reverse (31203103312), we get a palindrome (52533233525).
The spelling of 21330130213 in words is "twenty-one billion, three hundred thirty million, one hundred thirty thousand, two hundred thirteen".
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