211330223 has 4 divisors (see below), whose sum is σ = 227586408. Its totient is φ = 195074040.

The previous prime is 211330211. The next prime is 211330267. The reversal of 211330223 is 322033112.

211330223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 211330223 - 2¹² = 211326127 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 (211332223) 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, 8128073 + ... + 8128098.

It is an arithmetic number, because the mean of its divisors is an integer number (56896602).

Almost surely, 2^211330223 is an apocalyptic number.

211330223 is a deficient number, since it is larger than the sum of its proper divisors (16256185).

211330223 is a wasteful number, since it uses less digits than its factorization.

211330223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16256184.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 211330223 is about 14537.2013468893. The cubic root of 211330223 is about 595.6445929567.

Adding to 211330223 its reverse (322033112), we get a palindrome (533363335).

The spelling of 211330223 in words is "two hundred eleven million, three hundred thirty thousand, two hundred twenty-three".