21130320130 has 32 divisors (see below), whose sum is σ = 39387115008. Its totient is φ = 8153308800.

The previous prime is 21130320061. The next prime is 21130320143. The reversal of 21130320130 is 3102303112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11856 + ... + 205915.

It is an arithmetic number, because the mean of its divisors is an integer number (1230847344).

Almost surely, 2^21130320130 is an apocalyptic number.

21130320130 is a deficient number, since it is larger than the sum of its proper divisors (18256794878).

21130320130 is a wasteful number, since it uses less digits than its factorization.

21130320130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218122.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21130320130 its reverse (3102303112), we get a palindrome (24232623242).

The spelling of 21130320130 in words is "twenty-one billion, one hundred thirty million, three hundred twenty thousand, one hundred thirty".