11322221021 has 4 divisors (see below), whose sum is σ = 11322610332. Its totient is φ = 11321831712.

The previous prime is 11322220999. The next prime is 11322221033. The reversal of 11322221021 is 12012222311.

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 9523612921 + 1798608100 = 97589^2 + 42410^2 .

It is a cyclic number.

It is not a de Polignac number, because 11322221021 - 2⁶ = 11322220957 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 (11322221621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147170 + ... + 210483.

It is an arithmetic number, because the mean of its divisors is an integer number (2830652583).

Almost surely, 2^11322221021 is an apocalyptic number.

It is an amenable number.

11322221021 is a deficient number, since it is larger than the sum of its proper divisors (389311).

11322221021 is an equidigital number, since it uses as much as digits as its factorization.

11322221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389310.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11322221021 its reverse (12012222311), we get a palindrome (23334443332).

The spelling of 11322221021 in words is "eleven billion, three hundred twenty-two million, two hundred twenty-one thousand, twenty-one".