21310330210 has 32 divisors (see below), whose sum is σ = 41925828672. Its totient is φ = 7750987200.

The previous prime is 21310330199. The next prime is 21310330219. The reversal of 21310330210 is 1203301312.

It is not an unprimeable number, because it can be changed into a prime (21310330219) 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, 1214616 + ... + 1232035.

It is an arithmetic number, because the mean of its divisors is an integer number (1310182146).

Almost surely, 2^21310330210 is an apocalyptic number.

21310330210 is a deficient number, since it is larger than the sum of its proper divisors (20615498462).

21310330210 is a wasteful number, since it uses less digits than its factorization.

21310330210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446738.

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

Adding to 21310330210 its reverse (1203301312), we get a palindrome (22513631522).

The spelling of 21310330210 in words is "twenty-one billion, three hundred ten million, three hundred thirty thousand, two hundred ten".