21321110203130 has 8 divisors (see below), whose sum is σ = 38377998365652. Its totient is φ = 8528444081248.

The previous prime is 21321110203109. The next prime is 21321110203147. The reversal of 21321110203130 is 3130201112312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17909003001409 + 3412107201721 = 4231903^2 + 1847189^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1066055510147 + ... + 1066055510166.

Almost surely, 2^{21321110203130} is an apocalyptic number.

21321110203130 is a deficient number, since it is larger than the sum of its proper divisors (17056888162522).

21321110203130 is a wasteful number, since it uses less digits than its factorization.

21321110203130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132111020320.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21321110203130 its reverse (3130201112312), we get a palindrome (24451311315442).

The spelling of 21321110203130 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred ten million, two hundred three thousand, one hundred thirty".