201111234143 has 4 divisors (see below), whose sum is σ = 211696035960. Its totient is φ = 190526432328.

The previous prime is 201111234133. The next prime is 201111234151. The reversal of 201111234143 is 341432111102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201111234143 - 2⁴ = 201111234127 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 (201111234133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5292400880 + ... + 5292400917.

It is an arithmetic number, because the mean of its divisors is an integer number (52924008990).

Almost surely, 2^201111234143 is an apocalyptic number.

201111234143 is a deficient number, since it is larger than the sum of its proper divisors (10584801817).

201111234143 is a wasteful number, since it uses less digits than its factorization.

201111234143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10584801816.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 201111234143 its reverse (341432111102), we get a palindrome (542543345245).

The spelling of 201111234143 in words is "two hundred one billion, one hundred eleven million, two hundred thirty-four thousand, one hundred forty-three".