21222111201022 has 8 divisors (see below), whose sum is σ = 31833201569616. Its totient is φ = 10611044011152.

The previous prime is 21222111201017. The next prime is 21222111201061. The reversal of 21222111201022 is 22010211122212.

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

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 3 ways as a sum of consecutive naturals, for example, 3289023 + ... + 7298074.

It is an arithmetic number, because the mean of its divisors is an integer number (3979150196202).

Almost surely, 2^{21222111201022} is an apocalyptic number.

21222111201022 is a deficient number, since it is larger than the sum of its proper divisors (10611090368594).

21222111201022 is a wasteful number, since it uses less digits than its factorization.

21222111201022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11589362.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21222111201022 its reverse (22010211122212), we get a palindrome (43232322323234).

It can be divided in two parts, 2122211 and 1201022, that added together give a palindrome (3323233).

The spelling of 21222111201022 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred eleven million, two hundred one thousand, twenty-two".