211144223 has 8 divisors (see below), whose sum is σ = 214048800. Its totient is φ = 208251648.

The previous prime is 211144217. The next prime is 211144247. The reversal of 211144223 is 322441112.

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 211144223 - 2⁸ = 211143967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211144195 and 211144204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211144253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35798 + ... + 41276.

It is an arithmetic number, because the mean of its divisors is an integer number (26756100).

Almost surely, 2^211144223 is an apocalyptic number.

211144223 is a deficient number, since it is larger than the sum of its proper divisors (2904577).

211144223 is an equidigital number, since it uses as much as digits as its factorization.

211144223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6001.

The product of its digits is 384, while the sum is 20.

The square root of 211144223 is about 14530.8025587027. The cubic root of 211144223 is about 595.4697916243.

Adding to 211144223 its reverse (322441112), we get a palindrome (533585335).

The spelling of 211144223 in words is "two hundred eleven million, one hundred forty-four thousand, two hundred twenty-three".