211210211223 has 24 divisors (see below), whose sum is σ = 332928575616. Its totient is φ = 127962925200.

The previous prime is 211210211209. The next prime is 211210211231. The reversal of 211210211223 is 322112012112.

211210211223 is a `hidden beast` number, since 21 + 1 + 210 + 211 + 223 = 666.

211210211223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211210211223 - 2¹⁶ = 211210145687 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211210211196 and 211210211205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211210211263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64915 + ... + 653172.

It is an arithmetic number, because the mean of its divisors is an integer number (13872023984).

Almost surely, 2^211210211223 is an apocalyptic number.

211210211223 is a deficient number, since it is larger than the sum of its proper divisors (121718364393).

211210211223 is a wasteful number, since it uses less digits than its factorization.

211210211223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721075 (or 721072 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 211210211223 its reverse (322112012112), we get a palindrome (533322223335).

The spelling of 211210211223 in words is "two hundred eleven billion, two hundred ten million, two hundred eleven thousand, two hundred twenty-three".