211201011211 has 4 divisors (see below), whose sum is σ = 211230201952. Its totient is φ = 211171820472.

The previous prime is 211201011191. The next prime is 211201011227. The reversal of 211201011211 is 112110102112.

It is a happy number.

211201011211 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 a cyclic number.

It is not a de Polignac number, because 211201011211 - 2⁵ = 211201011179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211201011191 and 211201011200.

It is not an unprimeable number, because it can be changed into a prime (211201011271) 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, 14584515 + ... + 14598988.

It is an arithmetic number, because the mean of its divisors is an integer number (52807550488).

Almost surely, 2^211201011211 is an apocalyptic number.

211201011211 is a deficient number, since it is larger than the sum of its proper divisors (29190741).

211201011211 is an equidigital number, since it uses as much as digits as its factorization.

211201011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29190740.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 211201011211 its reverse (112110102112), we get a palindrome (323311113323).

Subtracting from 211201011211 its reverse (112110102112), we obtain a palindrome (99090909099).

The spelling of 211201011211 in words is "two hundred eleven billion, two hundred one million, eleven thousand, two hundred eleven".