22443211121 has 4 divisors (see below), whose sum is σ = 22464980544. Its totient is φ = 22421441700.

The previous prime is 22443211117. The next prime is 22443211123. The reversal of 22443211121 is 12111234422.

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.

It is a cyclic number.

It is not a de Polignac number, because 22443211121 - 2² = 22443211117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22443211123) 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, 10883165 + ... + 10885226.

It is an arithmetic number, because the mean of its divisors is an integer number (5616245136).

Almost surely, 2^22443211121 is an apocalyptic number.

It is an amenable number.

22443211121 is a deficient number, since it is larger than the sum of its proper divisors (21769423).

22443211121 is a wasteful number, since it uses less digits than its factorization.

22443211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21769422.

The product of its digits is 768, while the sum is 23.

Adding to 22443211121 its reverse (12111234422), we get a palindrome (34554445543).

The spelling of 22443211121 in words is "twenty-two billion, four hundred forty-three million, two hundred eleven thousand, one hundred twenty-one".