21130313210 has 32 divisors (see below), whose sum is σ = 41056813440. Its totient is φ = 7805858368.

The previous prime is 21130313209. The next prime is 21130313263. The reversal of 21130313210 is 1231303112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1577312 + ... + 1590651.

It is an arithmetic number, because the mean of its divisors is an integer number (1283025420).

Almost surely, 2^21130313210 is an apocalyptic number.

21130313210 is a deficient number, since it is larger than the sum of its proper divisors (19926500230).

21130313210 is a wasteful number, since it uses less digits than its factorization.

21130313210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3168022.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21130313210 its reverse (1231303112), we get a palindrome (22361616322).

The spelling of 21130313210 in words is "twenty-one billion, one hundred thirty million, three hundred thirteen thousand, two hundred ten".