243204222113 has 2 divisors, whose sum is σ = 243204222114. Its totient is φ = 243204222112.

The previous prime is 243204222061. The next prime is 243204222143. The reversal of 243204222113 is 311222402342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164452147729 + 78752074384 = 405527^2 + 280628^2 .

It is a cyclic number.

It is not a de Polignac number, because 243204222113 - 2¹⁰ = 243204221089 is a prime.

It is not a weakly prime, because it can be changed into another prime (243204222143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121602111056 + 121602111057.

It is an arithmetic number, because the mean of its divisors is an integer number (121602111057).

Almost surely, 2^243204222113 is an apocalyptic number.

It is an amenable number.

243204222113 is a deficient number, since it is larger than the sum of its proper divisors (1).

243204222113 is an equidigital number, since it uses as much as digits as its factorization.

243204222113 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 26.

Adding to 243204222113 its reverse (311222402342), we get a palindrome (554426624455).

The spelling of 243204222113 in words is "two hundred forty-three billion, two hundred four million, two hundred twenty-two thousand, one hundred thirteen".