212112211 has 8 divisors (see below), whose sum is σ = 214520544. Its totient is φ = 209717760.

The previous prime is 212112169. The next prime is 212112223. The reversal of 212112211 is 112211212.

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

It is a cyclic number.

It is not a de Polignac number, because 212112211 - 2¹⁵ = 212079443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212112191 and 212112200.

It is not an unprimeable number, because it can be changed into a prime (212112911) 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 7 ways as a sum of consecutive naturals, for example, 28941 + ... + 35521.

It is an arithmetic number, because the mean of its divisors is an integer number (26815068).

Almost surely, 2^212112211 is an apocalyptic number.

212112211 is a deficient number, since it is larger than the sum of its proper divisors (2408333).

212112211 is a wasteful number, since it uses less digits than its factorization.

212112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6941.

The product of its digits is 16, while the sum is 13.

The square root of 212112211 is about 14564.0726103655. The cubic root of 212112211 is about 596.3783791238.

Adding to 212112211 its reverse (112211212), we get a palindrome (324323423).

Subtracting from 212112211 its reverse (112211212), we obtain a palindrome (99900999).

It can be divided in two parts, 212 and 112211, that multiplied together give a palindrome (23788732).

The spelling of 212112211 in words is "two hundred twelve million, one hundred twelve thousand, two hundred eleven".