211000223 has 8 divisors (see below), whose sum is σ = 246064800. Its totient is φ = 180857040.

The previous prime is 211000217. The next prime is 211000247. The reversal of 211000223 is 322000112.

It is a happy number.

It is not a de Polignac number, because 211000223 - 2²⁰ = 209951647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211000423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307238 + ... + 307923.

It is an arithmetic number, because the mean of its divisors is an integer number (30758100).

Almost surely, 2^211000223 is an apocalyptic number.

211000223 is a deficient number, since it is larger than the sum of its proper divisors (35064577).

211000223 is an frugal number, since it uses more digits than its factorization.

211000223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615182 (or 615168 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 211000223 is about 14525.8467223085. The cubic root of 211000223 is about 595.3343910445.

Adding to 211000223 its reverse (322000112), we get a palindrome (533000335).

The spelling of 211000223 in words is "two hundred eleven million, two hundred twenty-three", and thus it is an aban number.