211203223223 has 4 divisors (see below), whose sum is σ = 222319182360. Its totient is φ = 200087264088.

The previous prime is 211203223219. The next prime is 211203223237. The reversal of 211203223223 is 322322302112.

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 211203223223 - 2² = 211203223219 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 (211203223213) 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, 5557979540 + ... + 5557979577.

It is an arithmetic number, because the mean of its divisors is an integer number (55579795590).

Almost surely, 2^211203223223 is an apocalyptic number.

211203223223 is a deficient number, since it is larger than the sum of its proper divisors (11115959137).

211203223223 is a wasteful number, since it uses less digits than its factorization.

211203223223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11115959136.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 211203223223 its reverse (322322302112), we get a palindrome (533525525335).

The spelling of 211203223223 in words is "two hundred eleven billion, two hundred three million, two hundred twenty-three thousand, two hundred twenty-three".