211222112211 has 96 divisors (see below), whose sum is σ = 347318072640. Its totient is φ = 126768660480.

The previous prime is 211222112173. The next prime is 211222112243. The reversal of 211222112211 is 112211222112.

211222112211 is a `hidden beast` number, since 211 + 22 + 211 + 221 + 1 = 666.

It is not a de Polignac number, because 211222112211 - 2⁷ = 211222112083 is a prime.

It is a super-2 number, since 2×211222112211² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211222111211) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 165404305 + ... + 165405581.

It is an arithmetic number, because the mean of its divisors is an integer number (3617896590).

Almost surely, 2^211222112211 is an apocalyptic number.

211222112211 is a deficient number, since it is larger than the sum of its proper divisors (136095960429).

211222112211 is a wasteful number, since it uses less digits than its factorization.

211222112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762 (or 1745 counting only the distinct ones).

The product of its digits is 64, while the sum is 18.

Adding to 211222112211 its reverse (112211222112), we get a palindrome (323433334323).

The spelling of 211222112211 in words is "two hundred eleven billion, two hundred twenty-two million, one hundred twelve thousand, two hundred eleven".