22222122011221 has 8 divisors (see below), whose sum is σ = 24243318244800. Its totient is φ = 20201092998240.

The previous prime is 22222122011183. The next prime is 22222122011233. The reversal of 22222122011221 is 12211022122222.

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

It is not a de Polignac number, because 22222122011221 - 2³¹ = 22219974527573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22222122011192 and 22222122011201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222125011221) by changing a digit.

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, 41527201 + ... + 42058918.

It is an arithmetic number, because the mean of its divisors is an integer number (3030414780600).

Almost surely, 2^{22222122011221} is an apocalyptic number.

It is an amenable number.

22222122011221 is a deficient number, since it is larger than the sum of its proper divisors (2021196233579).

22222122011221 is a wasteful number, since it uses less digits than its factorization.

22222122011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83610299.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 22222122011221 its reverse (12211022122222), we get a palindrome (34433144133443).

The spelling of 22222122011221 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred twenty-two million, eleven thousand, two hundred twenty-one".