243011222111 has 16 divisors (see below), whose sum is σ = 287133462528. Its totient is φ = 201261542400.

The previous prime is 243011222089. The next prime is 243011222143. The reversal of 243011222111 is 111222110342.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243011222111 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 (243011222171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 734435 + ... + 1012628.

It is an arithmetic number, because the mean of its divisors is an integer number (17945841408).

Almost surely, 2^243011222111 is an apocalyptic number.

243011222111 is a deficient number, since it is larger than the sum of its proper divisors (44122240417).

243011222111 is a wasteful number, since it uses less digits than its factorization.

243011222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747742.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 243011222111 its reverse (111222110342), we get a palindrome (354233332453).

The spelling of 243011222111 in words is "two hundred forty-three billion, eleven million, two hundred twenty-two thousand, one hundred eleven".