212211163 has 4 divisors (see below), whose sum is σ = 214768008. Its totient is φ = 209654320.

The previous prime is 212211137. The next prime is 212211191. The reversal of 212211163 is 361112212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212211163 is a prime.

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 212211163.

It is not an unprimeable number, because it can be changed into a prime (212211113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1278298 + ... + 1278463.

It is an arithmetic number, because the mean of its divisors is an integer number (53692002).

Almost surely, 2^212211163 is an apocalyptic number.

212211163 is a deficient number, since it is larger than the sum of its proper divisors (2556845).

212211163 is an equidigital number, since it uses as much as digits as its factorization.

212211163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2556844.

The product of its digits is 144, while the sum is 19.

The square root of 212211163 is about 14567.4693409665. The cubic root of 212211163 is about 596.4711030942.

Adding to 212211163 its reverse (361112212), we get a palindrome (573323375).

The spelling of 212211163 in words is "two hundred twelve million, two hundred eleven thousand, one hundred sixty-three".