21321113230 has 32 divisors (see below), whose sum is σ = 38993490720. Its totient is φ = 8392581120.

The previous prime is 21321113221. The next prime is 21321113237. The reversal of 21321113230 is 3231112312.

It is a junction number, because it is equal to n+sod(n) for n = 21321113198 and 21321113207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321113237) 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, 131022 + ... + 244558.

It is an arithmetic number, because the mean of its divisors is an integer number (1218546585).

Almost surely, 2^21321113230 is an apocalyptic number.

21321113230 is a deficient number, since it is larger than the sum of its proper divisors (17672377490).

21321113230 is a wasteful number, since it uses less digits than its factorization.

21321113230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113844.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21321113230 its reverse (3231112312), we get a palindrome (24552225542).

The spelling of 21321113230 in words is "twenty-one billion, three hundred twenty-one million, one hundred thirteen thousand, two hundred thirty".