22110000221 has 4 divisors (see below), whose sum is σ = 22110393600. Its totient is φ = 22109606844.

The previous prime is 22110000217. The next prime is 22110000277. The reversal of 22110000221 is 12200001122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12200001122 = 2 ⋅6100000561.

It is a cyclic number.

It is not a de Polignac number, because 22110000221 - 2² = 22110000217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22110080221) 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, 94781 + ... + 230658.

It is an arithmetic number, because the mean of its divisors is an integer number (5527598400).

Almost surely, 2^22110000221 is an apocalyptic number.

It is an amenable number.

22110000221 is a deficient number, since it is larger than the sum of its proper divisors (393379).

22110000221 is an equidigital number, since it uses as much as digits as its factorization.

22110000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393378.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22110000221 its reverse (12200001122), we get a palindrome (34310001343).

Subtracting from 22110000221 its reverse (12200001122), we obtain a palindrome (9909999099).

The spelling of 22110000221 in words is "twenty-two billion, one hundred ten million, two hundred twenty-one", and thus it is an aban number.