211312210223 has 16 divisors (see below), whose sum is σ = 223686489600. Its totient is φ = 199205566560.

The previous prime is 211312210211. The next prime is 211312210237. The reversal of 211312210223 is 322012213112.

It is a cyclic number.

It is not a de Polignac number, because 211312210223 - 2²⁰ = 211311161647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211312210195 and 211312210204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211312218223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4777373 + ... + 4821401.

It is an arithmetic number, because the mean of its divisors is an integer number (13980405600).

Almost surely, 2^211312210223 is an apocalyptic number.

211312210223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

211312210223 is a deficient number, since it is larger than the sum of its proper divisors (12374279377).

211312210223 is a wasteful number, since it uses less digits than its factorization.

211312210223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47062.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 211312210223 its reverse (322012213112), we get a palindrome (533324423335).

The spelling of 211312210223 in words is "two hundred eleven billion, three hundred twelve million, two hundred ten thousand, two hundred twenty-three".