211106212 has 12 divisors (see below), whose sum is σ = 378446796. Its totient is φ = 102978560.

The previous prime is 211106179. The next prime is 211106219. The reversal of 211106212 is 212601112.

It can be written as a sum of positive squares in 2 ways, for example, as 17172736 + 193933476 = 4144^2 + 13926^2 .

It is not an unprimeable number, because it can be changed into a prime (211106219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643453 + ... + 643780.

It is an arithmetic number, because the mean of its divisors is an integer number (31537233).

Almost surely, 2^211106212 is an apocalyptic number.

It is an amenable number.

211106212 is a deficient number, since it is larger than the sum of its proper divisors (167340584).

211106212 is a wasteful number, since it uses less digits than its factorization.

211106212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287278 (or 1287276 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 211106212 is about 14529.4945541818. The cubic root of 211106212 is about 595.4340565545.

Adding to 211106212 its reverse (212601112), we get a palindrome (423707324).

The spelling of 211106212 in words is "two hundred eleven million, one hundred six thousand, two hundred twelve".