211320223 has 8 divisors (see below), whose sum is σ = 224737520. Its totient is φ = 198132480.

The previous prime is 211320203. The next prime is 211320227. The reversal of 211320223 is 322023112.

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 211320223 - 2²¹ = 209223071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211320197 and 211320206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211320227) 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, 55488 + ... + 59173.

It is an arithmetic number, because the mean of its divisors is an integer number (28092190).

Almost surely, 2^211320223 is an apocalyptic number.

211320223 is a deficient number, since it is larger than the sum of its proper divisors (13417297).

211320223 is a wasteful number, since it uses less digits than its factorization.

211320223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114777.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 211320223 is about 14536.8573976634. The cubic root of 211320223 is about 595.6351976451.

Adding to 211320223 its reverse (322023112), we get a palindrome (533343335).

The spelling of 211320223 in words is "two hundred eleven million, three hundred twenty thousand, two hundred twenty-three".