21222010202110 has 16 divisors (see below), whose sum is σ = 38203062142176. Its totient is φ = 8488038796768.

The previous prime is 21222010202101. The next prime is 21222010202161. The reversal of 21222010202110 is 1120201022212.

It is a happy number.

It is a congruent number.

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, 95544034 + ... + 95765893.

It is an arithmetic number, because the mean of its divisors is an integer number (2387691383886).

Almost surely, 2^{21222010202110} is an apocalyptic number.

21222010202110 is a deficient number, since it is larger than the sum of its proper divisors (16981051940066).

21222010202110 is a wasteful number, since it uses less digits than its factorization.

21222010202110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191321027.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21222010202110 its reverse (1120201022212), we get a palindrome (22342211224322).

The spelling of 21222010202110 in words is "twenty-one trillion, two hundred twenty-two billion, ten million, two hundred two thousand, one hundred ten".