Base | Representation |
---|---|
bin | 10111010010010111… |
… | …10001101110111101 |
3 | 1012021021221011012010 |
4 | 23221023301232331 |
5 | 201101020110323 |
6 | 5424323401433 |
7 | 621546131442 |
oct | 135113615675 |
9 | 35237834163 |
10 | 12502113213 |
11 | 5336131777 |
12 | 250ab23279 |
13 | 12431a9735 |
14 | 8685a39c9 |
15 | 4d28a4c93 |
hex | 2e92f1bbd |
12502113213 has 4 divisors (see below), whose sum is σ = 16669484288. Its totient is φ = 8334742140.
The previous prime is 12502113209. The next prime is 12502113229. The reversal of 12502113213 is 31231120521.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31231120521 = 3 ⋅10410373507.
It is not a de Polignac number, because 12502113213 - 22 = 12502113209 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 12502113213.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12502111213) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2083685533 + ... + 2083685538.
It is an arithmetic number, because the mean of its divisors is an integer number (4167371072).
Almost surely, 212502113213 is an apocalyptic number.
It is an amenable number.
12502113213 is a deficient number, since it is larger than the sum of its proper divisors (4167371075).
12502113213 is an equidigital number, since it uses as much as digits as its factorization.
12502113213 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4167371074.
The product of its (nonzero) digits is 360, while the sum is 21.
Adding to 12502113213 its reverse (31231120521), we get a palindrome (43733233734).
The spelling of 12502113213 in words is "twelve billion, five hundred two million, one hundred thirteen thousand, two hundred thirteen".
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