211022222221211 has 4 divisors (see below), whose sum is σ = 214481602913424. Its totient is φ = 207562841529000.

The previous prime is 211022222221199. The next prime is 211022222221241. The reversal of 211022222221211 is 112122222220112.

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 211022222221211 - 2⁶ = 211022222221147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211022222221241) 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, 1729690346015 + ... + 1729690346136.

It is an arithmetic number, because the mean of its divisors is an integer number (53620400728356).

Almost surely, 2^{211022222221211} is an apocalyptic number.

211022222221211 is a deficient number, since it is larger than the sum of its proper divisors (3459380692213).

211022222221211 is an equidigital number, since it uses as much as digits as its factorization.

211022222221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3459380692212.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 211022222221211 its reverse (112122222220112), we get a palindrome (323144444441323).

The spelling of 211022222221211 in words is "two hundred eleven trillion, twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred eleven".