211122201211 has 4 divisors (see below), whose sum is σ = 211126882624. Its totient is φ = 211117519800.

The previous prime is 211122201203. The next prime is 211122201239. The reversal of 211122201211 is 112102221112.

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 211122201211 - 2³ = 211122201203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211122201281) 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, 2272395 + ... + 2363476.

It is an arithmetic number, because the mean of its divisors is an integer number (52781720656).

Almost surely, 2^211122201211 is an apocalyptic number.

211122201211 is a deficient number, since it is larger than the sum of its proper divisors (4681413).

211122201211 is an equidigital number, since it uses as much as digits as its factorization.

211122201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4681412.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211122201211 its reverse (112102221112), we get a palindrome (323224422323).

The spelling of 211122201211 in words is "two hundred eleven billion, one hundred twenty-two million, two hundred one thousand, two hundred eleven".