21222112022210 has 32 divisors (see below), whose sum is σ = 42294488668992. Its totient is φ = 7601950572480.

The previous prime is 21222112022159. The next prime is 21222112022299. The reversal of 21222112022210 is 1222021122212.

21222112022210 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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, 1439755997 + ... + 1439770736.

It is an arithmetic number, because the mean of its divisors is an integer number (1321702770906).

Almost surely, 2^{21222112022210} is an apocalyptic number.

21222112022210 is a deficient number, since it is larger than the sum of its proper divisors (21072376646782).

21222112022210 is a wasteful number, since it uses less digits than its factorization.

21222112022210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2879526818.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21222112022210 its reverse (1222021122212), we get a palindrome (22444133144422).

The spelling of 21222112022210 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred twelve million, twenty-two thousand, two hundred ten".