22011230321 has 4 divisors (see below), whose sum is σ = 22011923172. Its totient is φ = 22010537472.

The previous prime is 22011230291. The next prime is 22011230323. The reversal of 22011230321 is 12303211022.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6842598400 + 15168631921 = 82720^2 + 123161^2 .

It is a cyclic number.

It is not a de Polignac number, because 22011230321 - 2³⁰ = 20937488497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22011230321.

It is not an unprimeable number, because it can be changed into a prime (22011230323) 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, 296360 + ... + 363113.

It is an arithmetic number, because the mean of its divisors is an integer number (5502980793).

Almost surely, 2^22011230321 is an apocalyptic number.

It is an amenable number.

22011230321 is a deficient number, since it is larger than the sum of its proper divisors (692851).

22011230321 is an equidigital number, since it uses as much as digits as its factorization.

22011230321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692850.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 22011230321 its reverse (12303211022), we get a palindrome (34314441343).

The spelling of 22011230321 in words is "twenty-two billion, eleven million, two hundred thirty thousand, three hundred twenty-one".