21330224210 has 32 divisors (see below), whose sum is σ = 38625552000. Its totient is φ = 8480828160.

The previous prime is 21330224177. The next prime is 21330224231. The reversal of 21330224210 is 1242203312.

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, 1764266 + ... + 1776314.

It is an arithmetic number, because the mean of its divisors is an integer number (1207048500).

Almost surely, 2^21330224210 is an apocalyptic number.

21330224210 is a deficient number, since it is larger than the sum of its proper divisors (17295327790).

21330224210 is a wasteful number, since it uses less digits than its factorization.

21330224210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13106.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21330224210 its reverse (1242203312), we get a palindrome (22572427522).

The spelling of 21330224210 in words is "twenty-one billion, three hundred thirty million, two hundred twenty-four thousand, two hundred ten".