21222102202022 has 8 divisors (see below), whose sum is σ = 31901318514936. Its totient is φ = 10588329363712.

The previous prime is 21222102202019. The next prime is 21222102202027. The reversal of 21222102202022 is 22020220122212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21222102201985 and 21222102202003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222102202027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11360867483 + ... + 11360869350.

It is an arithmetic number, because the mean of its divisors is an integer number (3987664814367).

Almost surely, 2^{21222102202022} is an apocalyptic number.

21222102202022 is a deficient number, since it is larger than the sum of its proper divisors (10679216312914).

21222102202022 is a wasteful number, since it uses less digits than its factorization.

21222102202022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22721737302.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 21222102202022 its reverse (22020220122212), we get a palindrome (43242322324234).

The spelling of 21222102202022 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred two million, two hundred two thousand, twenty-two".