Base | Representation |
---|---|
bin | 101110100010… |
… | …111000010101 |
3 | 211221220022011 |
4 | 232202320111 |
5 | 11110421433 |
6 | 1113304221 |
7 | 205465603 |
oct | 56427025 |
9 | 24856264 |
10 | 12201493 |
11 | 6984187 |
12 | 4105071 |
13 | 26b2925 |
14 | 1898873 |
15 | 11103cd |
hex | ba2e15 |
12201493 has 2 divisors, whose sum is σ = 12201494. Its totient is φ = 12201492.
The previous prime is 12201491. The next prime is 12201499. The reversal of 12201493 is 39410221.
12201493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 10804369 + 1397124 = 3287^2 + 1182^2 .
It is an emirp because it is prime and its reverse (39410221) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 12201493 - 21 = 12201491 is a prime.
Together with 12201491, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12201491) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100746 + 6100747.
It is an arithmetic number, because the mean of its divisors is an integer number (6100747).
Almost surely, 212201493 is an apocalyptic number.
It is an amenable number.
12201493 is a deficient number, since it is larger than the sum of its proper divisors (1).
12201493 is an equidigital number, since it uses as much as digits as its factorization.
12201493 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 432, while the sum is 22.
The square root of 12201493 is about 3493.0635551046. The cubic root of 12201493 is about 230.2171421284.
The spelling of 12201493 in words is "twelve million, two hundred one thousand, four hundred ninety-three".
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