211010211010211 has 4 divisors (see below), whose sum is σ = 211010515097952. Its totient is φ = 211009906922472.

The previous prime is 211010211010153. The next prime is 211010211010271. The reversal of 211010211010211 is 112010112010112.

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 211010211010211 - 2¹⁸ = 211010210748067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211010211010271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151000616 + ... + 152391621.

It is an arithmetic number, because the mean of its divisors is an integer number (52752628774488).

Almost surely, 2^{211010211010211} is an apocalyptic number.

211010211010211 is a deficient number, since it is larger than the sum of its proper divisors (304087741).

211010211010211 is an equidigital number, since it uses as much as digits as its factorization.

211010211010211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304087740.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 211010211010211 its reverse (112010112010112), we get a palindrome (323020323020323).

Subtracting from 211010211010211 its reverse (112010112010112), we obtain a palindrome (99000099000099).

The spelling of 211010211010211 in words is "two hundred eleven trillion, ten billion, two hundred eleven million, ten thousand, two hundred eleven".