22241022221 has 12 divisors (see below), whose sum is σ = 24450490176. Its totient is φ = 20216012520.

The previous prime is 22241022197. The next prime is 22241022253. The reversal of 22241022221 is 12222014222.

It is not a de Polignac number, because 22241022221 - 2²⁶ = 22173913357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22241022193 and 22241022202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22241022121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1233356 + ... + 1251258.

It is an arithmetic number, because the mean of its divisors is an integer number (2037540848).

Almost surely, 2^22241022221 is an apocalyptic number.

It is an amenable number.

22241022221 is a deficient number, since it is larger than the sum of its proper divisors (2209467955).

22241022221 is a wasteful number, since it uses less digits than its factorization.

22241022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28192 (or 28181 counting only the distinct ones).

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

Adding to 22241022221 its reverse (12222014222), we get a palindrome (34463036443).

The spelling of 22241022221 in words is "twenty-two billion, two hundred forty-one million, twenty-two thousand, two hundred twenty-one".