21302322230 has 24 divisors (see below), whose sum is σ = 44604455328. Its totient is φ = 7303653168.

The previous prime is 21302322149. The next prime is 21302322247. The reversal of 21302322230 is 3222320312.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21736574 + ... + 21737553.

It is an arithmetic number, because the mean of its divisors is an integer number (1858518972).

Almost surely, 2^21302322230 is an apocalyptic number.

21302322230 is an abundant number, since it is smaller than the sum of its proper divisors (23302133098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21302322230 is a wasteful number, since it uses less digits than its factorization.

21302322230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43474148 (or 43474141 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21302322230 its reverse (3222320312), we get a palindrome (24524642542).

The spelling of 21302322230 in words is "twenty-one billion, three hundred two million, three hundred twenty-two thousand, two hundred thirty".