21030230223 has 6 divisors (see below), whose sum is σ = 30376999224. Its totient is φ = 14020153476.

The previous prime is 21030230197. The next prime is 21030230231. The reversal of 21030230223 is 32203203012.

It is a happy number.

21030230223 is a `hidden beast` number, since 210 + 3 + 0 + 230 + 223 = 666.

It is not a de Polignac number, because 21030230223 - 2⁵ = 21030230191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21030230196 and 21030230205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030230233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1168346115 + ... + 1168346132.

It is an arithmetic number, because the mean of its divisors is an integer number (5062833204).

Almost surely, 2^21030230223 is an apocalyptic number.

21030230223 is a deficient number, since it is larger than the sum of its proper divisors (9346769001).

21030230223 is a wasteful number, since it uses less digits than its factorization.

21030230223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336692253 (or 2336692250 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 21030230223 its reverse (32203203012), we get a palindrome (53233433235).

The spelling of 21030230223 in words is "twenty-one billion, thirty million, two hundred thirty thousand, two hundred twenty-three".