211120203312111 has 4 divisors (see below), whose sum is σ = 281493604416152. Its totient is φ = 140746802208072.

The previous prime is 211120203312077. The next prime is 211120203312203. The reversal of 211120203312111 is 111213302021112.

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

It is not a de Polignac number, because 211120203312111 - 2⁶ = 211120203312047 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 (211120203311111) 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, 35186700552016 + ... + 35186700552021.

It is an arithmetic number, because the mean of its divisors is an integer number (70373401104038).

Almost surely, 2^{211120203312111} is an apocalyptic number.

211120203312111 is a deficient number, since it is larger than the sum of its proper divisors (70373401104041).

211120203312111 is an equidigital number, since it uses as much as digits as its factorization.

211120203312111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70373401104040.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 211120203312111 its reverse (111213302021112), we get a palindrome (322333505333223).

The spelling of 211120203312111 in words is "two hundred eleven trillion, one hundred twenty billion, two hundred three million, three hundred twelve thousand, one hundred eleven".