243122045111 has 16 divisors (see below), whose sum is σ = 269850113280. Its totient is φ = 217168620480.

The previous prime is 243122045093. The next prime is 243122045237. The reversal of 243122045111 is 111540221342.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243122045111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243122045611) 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 15 ways as a sum of consecutive naturals, for example, 1264715 + ... + 1444211.

It is an arithmetic number, because the mean of its divisors is an integer number (16865632080).

Almost surely, 2^243122045111 is an apocalyptic number.

243122045111 is a deficient number, since it is larger than the sum of its proper divisors (26728068169).

243122045111 is a wasteful number, since it uses less digits than its factorization.

243122045111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181654.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 243122045111 its reverse (111540221342), we get a palindrome (354662266453).

The spelling of 243122045111 in words is "two hundred forty-three billion, one hundred twenty-two million, forty-five thousand, one hundred eleven".