22052404221 has 4 divisors (see below), whose sum is σ = 29403205632. Its totient is φ = 14701602812.

The previous prime is 22052404189. The next prime is 22052404223. The reversal of 22052404221 is 12240425022.

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 22052404221 - 2⁵ = 22052404189 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22052404191 and 22052404200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22052404223) 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, 3675400701 + ... + 3675400706.

It is an arithmetic number, because the mean of its divisors is an integer number (7350801408).

Almost surely, 2^22052404221 is an apocalyptic number.

It is an amenable number.

22052404221 is a deficient number, since it is larger than the sum of its proper divisors (7350801411).

22052404221 is an equidigital number, since it uses as much as digits as its factorization.

22052404221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7350801410.

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 22052404221 its reverse (12240425022), we get a palindrome (34292829243).

The spelling of 22052404221 in words is "twenty-two billion, fifty-two million, four hundred four thousand, two hundred twenty-one".