210221230223 has 16 divisors (see below), whose sum is σ = 223144165440. Its totient is φ = 197360825856.

The previous prime is 210221230133. The next prime is 210221230253. The reversal of 210221230223 is 322032122012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 210221230223 - 2¹⁶ = 210221164687 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210221230195 and 210221230204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210221230253) 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, 11358365 + ... + 11376857.

It is an arithmetic number, because the mean of its divisors is an integer number (13946510340).

Almost surely, 2^210221230223 is an apocalyptic number.

210221230223 is a deficient number, since it is larger than the sum of its proper divisors (12922935217).

210221230223 is a wasteful number, since it uses less digits than its factorization.

210221230223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20146.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 210221230223 its reverse (322032122012), we get a palindrome (532253352235).

The spelling of 210221230223 in words is "two hundred ten billion, two hundred twenty-one million, two hundred thirty thousand, two hundred twenty-three".