22221204043 has 4 divisors (see below), whose sum is σ = 22597834680. Its totient is φ = 21844573408.

The previous prime is 22221203971. The next prime is 22221204059. The reversal of 22221204043 is 34040212222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22221204043 - 2³³ = 13631269451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22221204443) 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, 188315230 + ... + 188315347.

It is an arithmetic number, because the mean of its divisors is an integer number (5649458670).

Almost surely, 2^22221204043 is an apocalyptic number.

22221204043 is a deficient number, since it is larger than the sum of its proper divisors (376630637).

22221204043 is an equidigital number, since it uses as much as digits as its factorization.

22221204043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376630636.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 22221204043 its reverse (34040212222), we get a palindrome (56261416265).

The spelling of 22221204043 in words is "twenty-two billion, two hundred twenty-one million, two hundred four thousand, forty-three".