211031441211 has 4 divisors (see below), whose sum is σ = 281375254952. Its totient is φ = 140687627472.

The previous prime is 211031441207. The next prime is 211031441227. The reversal of 211031441211 is 112144130112.

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

It is not a de Polignac number, because 211031441211 - 2² = 211031441207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211031441261) 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, 35171906866 + ... + 35171906871.

It is an arithmetic number, because the mean of its divisors is an integer number (70343813738).

Almost surely, 2^211031441211 is an apocalyptic number.

211031441211 is a deficient number, since it is larger than the sum of its proper divisors (70343813741).

211031441211 is an equidigital number, since it uses as much as digits as its factorization.

211031441211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70343813740.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 211031441211 its reverse (112144130112), we get a palindrome (323175571323).

The spelling of 211031441211 in words is "two hundred eleven billion, thirty-one million, four hundred forty-one thousand, two hundred eleven".