211775752011 has 4 divisors (see below), whose sum is σ = 282367669352. Its totient is φ = 141183834672.

The previous prime is 211775752007. The next prime is 211775752021. The reversal of 211775752011 is 110257577112.

211775752011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 211775752011 - 2² = 211775752007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211775752021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35295958666 + ... + 35295958671.

It is an arithmetic number, because the mean of its divisors is an integer number (70591917338).

Almost surely, 2^211775752011 is an apocalyptic number.

211775752011 is a deficient number, since it is larger than the sum of its proper divisors (70591917341).

211775752011 is an equidigital number, since it uses as much as digits as its factorization.

211775752011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70591917340.

The product of its (nonzero) digits is 34300, while the sum is 39.

The spelling of 211775752011 in words is "two hundred eleven billion, seven hundred seventy-five million, seven hundred fifty-two thousand, eleven".