21130320202 has 8 divisors (see below), whose sum is σ = 33073544736. Its totient is φ = 10105805292.

The previous prime is 21130320163. The next prime is 21130320203. The reversal of 21130320202 is 20202303112.

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

It is not an unprimeable number, because it can be changed into a prime (21130320203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229677348 + ... + 229677439.

It is an arithmetic number, because the mean of its divisors is an integer number (4134193092).

Almost surely, 2^21130320202 is an apocalyptic number.

21130320202 is a deficient number, since it is larger than the sum of its proper divisors (11943224534).

21130320202 is a wasteful number, since it uses less digits than its factorization.

21130320202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459354812.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21130320202 its reverse (20202303112), we get a palindrome (41332623314).

The spelling of 21130320202 in words is "twenty-one billion, one hundred thirty million, three hundred twenty thousand, two hundred two".