22011223321 has 4 divisors (see below), whose sum is σ = 22093049700. Its totient is φ = 21929396944.

The previous prime is 22011223301. The next prime is 22011223349. The reversal of 22011223321 is 12332211022.

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 11414785600 + 10596437721 = 106840^2 + 102939^2 .

It is a cyclic number.

It is not a de Polignac number, because 22011223321 - 2⁷ = 22011223193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22011223301) 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, 40912786 + ... + 40913323.

It is an arithmetic number, because the mean of its divisors is an integer number (5523262425).

Almost surely, 2^22011223321 is an apocalyptic number.

It is an amenable number.

22011223321 is a deficient number, since it is larger than the sum of its proper divisors (81826379).

22011223321 is an equidigital number, since it uses as much as digits as its factorization.

22011223321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81826378.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22011223321 its reverse (12332211022), we get a palindrome (34343434343).

The spelling of 22011223321 in words is "twenty-two billion, eleven million, two hundred twenty-three thousand, three hundred twenty-one".