204122120243113 has 2 divisors, whose sum is σ = 204122120243114. Its totient is φ = 204122120243112.

The previous prime is 204122120243099. The next prime is 204122120243149. The reversal of 204122120243113 is 311342021221402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203787958786624 + 334161456489 = 14275432^2 + 578067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204122120243113 is a prime.

It is not a weakly prime, because it can be changed into another prime (204122120244113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102061060121556 + 102061060121557.

It is an arithmetic number, because the mean of its divisors is an integer number (102061060121557).

Almost surely, 2^{204122120243113} is an apocalyptic number.

It is an amenable number.

204122120243113 is a deficient number, since it is larger than the sum of its proper divisors (1).

204122120243113 is an equidigital number, since it uses as much as digits as its factorization.

204122120243113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 204122120243113 its reverse (311342021221402), we get a palindrome (515464141464515).

The spelling of 204122120243113 in words is "two hundred four trillion, one hundred twenty-two billion, one hundred twenty million, two hundred forty-three thousand, one hundred thirteen".