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12201434213 = 27974362329
BaseRepresentation
bin10110101110100001…
…10001110001100101
31011111100011002010212
423113100301301211
5144442031343323
65334423025205
7611235323333
oct132720616145
934440132125
1012201434213
1151a1434131
12244629b205
1311c5b01877
1483a694b53
154b62aeb78
hex2d7431c65

12201434213 has 4 divisors (see below), whose sum is σ = 12205799340. Its totient is φ = 12197069088.

The previous prime is 12201434149. The next prime is 12201434233. The reversal of 12201434213 is 31243410221.

12201434213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31243410221 = 167411866281.

It can be written as a sum of positive squares in 2 ways, for example, as 10577505409 + 1623928804 = 102847^2 + 40298^2 .

It is a cyclic number.

It is not a de Polignac number, because 12201434213 - 26 = 12201434149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201434233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2178368 + ... + 2183961.

It is an arithmetic number, because the mean of its divisors is an integer number (3051449835).

Almost surely, 212201434213 is an apocalyptic number.

It is an amenable number.

12201434213 is a deficient number, since it is larger than the sum of its proper divisors (4365127).

12201434213 is an equidigital number, since it uses as much as digits as its factorization.

12201434213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4365126.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 12201434213 its reverse (31243410221), we get a palindrome (43444844434).

The spelling of 12201434213 in words is "twelve billion, two hundred one million, four hundred thirty-four thousand, two hundred thirteen".

Divisors: 1 2797 4362329 12201434213