11211232321 has 8 divisors (see below), whose sum is σ = 11803053600. Its totient is φ = 10619586720.

The previous prime is 11211232289. The next prime is 11211232327. The reversal of 11211232321 is 12323211211.

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 11211232321 - 2⁵ = 11211232289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211232327) 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, 99045 + ... + 179533.

It is an arithmetic number, because the mean of its divisors is an integer number (1475381700).

Almost surely, 2^11211232321 is an apocalyptic number.

It is an amenable number.

11211232321 is a deficient number, since it is larger than the sum of its proper divisors (591821279).

11211232321 is an equidigital number, since it uses as much as digits as its factorization.

11211232321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87839.

The product of its digits is 144, while the sum is 19.

Adding to 11211232321 its reverse (12323211211), we get a palindrome (23534443532).

The spelling of 11211232321 in words is "eleven billion, two hundred eleven million, two hundred thirty-two thousand, three hundred twenty-one".