22213241221 has 8 divisors (see below), whose sum is σ = 23402181600. Its totient is φ = 21026283120.

The previous prime is 22213241213. The next prime is 22213241261. The reversal of 22213241221 is 12214231222.

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

It is not a de Polignac number, because 22213241221 - 2³ = 22213241213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22213241192 and 22213241201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22213241261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472531 + ... + 517408.

It is an arithmetic number, because the mean of its divisors is an integer number (2925272700).

Almost surely, 2^22213241221 is an apocalyptic number.

It is an amenable number.

22213241221 is a deficient number, since it is larger than the sum of its proper divisors (1188940379).

22213241221 is a wasteful number, since it uses less digits than its factorization.

22213241221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991139.

The product of its digits is 768, while the sum is 22.

Adding to 22213241221 its reverse (12214231222), we get a palindrome (34427472443).

Subtracting from 22213241221 its reverse (12214231222), we obtain a palindrome (9999009999).

The spelling of 22213241221 in words is "twenty-two billion, two hundred thirteen million, two hundred forty-one thousand, two hundred twenty-one".