211222120211 has 8 divisors (see below), whose sum is σ = 219424504704. Its totient is φ = 203106533760.

The previous prime is 211222120201. The next prime is 211222120229. The reversal of 211222120211 is 112021222112.

211222120211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211222120211 is a prime.

It is a super-2 number, since 2×211222120211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211222120211.

It is not an unprimeable number, because it can be changed into a prime (211222120201) 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 7 ways as a sum of consecutive naturals, for example, 21694550 + ... + 21704283.

It is an arithmetic number, because the mean of its divisors is an integer number (27428063088).

Almost surely, 2^211222120211 is an apocalyptic number.

211222120211 is a deficient number, since it is larger than the sum of its proper divisors (8202384493).

211222120211 is a wasteful number, since it uses less digits than its factorization.

211222120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43399021.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211222120211 its reverse (112021222112), we get a palindrome (323243342323).

The spelling of 211222120211 in words is "two hundred eleven billion, two hundred twenty-two million, one hundred twenty thousand, two hundred eleven".