21222102320210 has 16 divisors (see below), whose sum is σ = 41672491828992. Its totient is φ = 7717128116400.

The previous prime is 21222102320207. The next prime is 21222102320227. The reversal of 21222102320210 is 1202320122212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96464101346 + ... + 96464101565.

It is an arithmetic number, because the mean of its divisors is an integer number (2604530739312).

Almost surely, 2^{21222102320210} is an apocalyptic number.

21222102320210 is a deficient number, since it is larger than the sum of its proper divisors (20450389508782).

21222102320210 is a wasteful number, since it uses less digits than its factorization.

21222102320210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192928202929.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21222102320210 its reverse (1202320122212), we get a palindrome (22424422442422).

The spelling of 21222102320210 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred two million, three hundred twenty thousand, two hundred ten".