211100311011 has 4 divisors (see below), whose sum is σ = 281467081352. Its totient is φ = 140733540672.

The previous prime is 211100310997. The next prime is 211100311027. The reversal of 211100311011 is 110113001112.

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

It is not a de Polignac number, because 211100311011 - 2¹⁸ = 211100048867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211100311031) 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, 35183385166 + ... + 35183385171.

It is an arithmetic number, because the mean of its divisors is an integer number (70366770338).

Almost surely, 2^211100311011 is an apocalyptic number.

211100311011 is a deficient number, since it is larger than the sum of its proper divisors (70366770341).

211100311011 is an equidigital number, since it uses as much as digits as its factorization.

211100311011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70366770340.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 211100311011 its reverse (110113001112), we get a palindrome (321213312123).

The spelling of 211100311011 in words is "two hundred eleven billion, one hundred million, three hundred eleven thousand, eleven".