211303312211 has 2 divisors, whose sum is σ = 211303312212. Its totient is φ = 211303312210.

The previous prime is 211303312159. The next prime is 211303312267. The reversal of 211303312211 is 112213303112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211303312211 - 2¹⁰ = 211303311187 is a prime.

It is not a weakly prime, because it can be changed into another prime (211303302211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105651656105 + 105651656106.

It is an arithmetic number, because the mean of its divisors is an integer number (105651656106).

Almost surely, 2^211303312211 is an apocalyptic number.

211303312211 is a deficient number, since it is larger than the sum of its proper divisors (1).

211303312211 is an equidigital number, since it uses as much as digits as its factorization.

211303312211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 211303312211 its reverse (112213303112), we get a palindrome (323516615323).

Subtracting from 211303312211 its reverse (112213303112), we obtain a palindrome (99090009099).

The spelling of 211303312211 in words is "two hundred eleven billion, three hundred three million, three hundred twelve thousand, two hundred eleven".