11323322221 has 4 divisors (see below), whose sum is σ = 11380801212. Its totient is φ = 11265843232.

The previous prime is 11323322189. The next prime is 11323322233. The reversal of 11323322221 is 12222332311.

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 10202010025 + 1121312196 = 101005^2 + 33486^2 .

It is a cyclic number.

It is not a de Polignac number, because 11323322221 - 2⁵ = 11323322189 is a prime.

It is a super-2 number, since 2×11323322221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11323322192 and 11323322201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11323322261) 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, 28739200 + ... + 28739593.

It is an arithmetic number, because the mean of its divisors is an integer number (2845200303).

Almost surely, 2^11323322221 is an apocalyptic number.

It is an amenable number.

11323322221 is a deficient number, since it is larger than the sum of its proper divisors (57478991).

11323322221 is an equidigital number, since it uses as much as digits as its factorization.

11323322221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57478990.

The product of its digits is 864, while the sum is 22.

Adding to 11323322221 its reverse (12222332311), we get a palindrome (23545654532).

The spelling of 11323322221 in words is "eleven billion, three hundred twenty-three million, three hundred twenty-two thousand, two hundred twenty-one".