201040243111 has 4 divisors (see below), whose sum is σ = 201091493592. Its totient is φ = 200988992632.

The previous prime is 201040243099. The next prime is 201040243121. The reversal of 201040243111 is 111342040102.

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 201040243111 - 2⁷ = 201040242983 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 (201040243121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25619356 + ... + 25627201.

It is an arithmetic number, because the mean of its divisors is an integer number (50272873398).

Almost surely, 2^201040243111 is an apocalyptic number.

201040243111 is a deficient number, since it is larger than the sum of its proper divisors (51250481).

201040243111 is an equidigital number, since it uses as much as digits as its factorization.

201040243111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51250480.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 201040243111 its reverse (111342040102), we get a palindrome (312382283213).

The spelling of 201040243111 in words is "two hundred one billion, forty million, two hundred forty-three thousand, one hundred eleven".