22203221021 has 8 divisors (see below), whose sum is σ = 22528527840. Its totient is φ = 21879290512.

The previous prime is 22203221009. The next prime is 22203221063. The reversal of 22203221021 is 12012230222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22203221021 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 (22203221071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311555 + ... + 376128.

It is an arithmetic number, because the mean of its divisors is an integer number (2816065980).

Almost surely, 2^22203221021 is an apocalyptic number.

It is an amenable number.

22203221021 is a deficient number, since it is larger than the sum of its proper divisors (325306819).

22203221021 is an equidigital number, since it uses as much as digits as its factorization.

22203221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688155.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22203221021 its reverse (12012230222), we get a palindrome (34215451243).

The spelling of 22203221021 in words is "twenty-two billion, two hundred three million, two hundred twenty-one thousand, twenty-one".