11321332221 has 8 divisors (see below), whose sum is σ = 15102309600. Its totient is φ = 7543954832.

The previous prime is 11321332207. The next prime is 11321332259. The reversal of 11321332221 is 12223312311.

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

It is a cyclic number.

It is not a de Polignac number, because 11321332221 - 2⁹ = 11321331709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321332621) 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, 892650 + ... + 905243.

It is an arithmetic number, because the mean of its divisors is an integer number (1887788700).

Almost surely, 2^11321332221 is an apocalyptic number.

It is an amenable number.

11321332221 is a deficient number, since it is larger than the sum of its proper divisors (3780977379).

11321332221 is a wasteful number, since it uses less digits than its factorization.

11321332221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799995.

The product of its digits is 432, while the sum is 21.

Adding to 11321332221 its reverse (12223312311), we get a palindrome (23544644532).

The spelling of 11321332221 in words is "eleven billion, three hundred twenty-one million, three hundred thirty-two thousand, two hundred twenty-one".