11221313321 has 4 divisors (see below), whose sum is σ = 11222520144. Its totient is φ = 11220106500.

The previous prime is 11221313317. The next prime is 11221313353. The reversal of 11221313321 is 12331312211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11221313321 - 2² = 11221313317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11221313293 and 11221313302.

It is not an unprimeable number, because it can be changed into a prime (11221315321) 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, 589355 + ... + 608096.

It is an arithmetic number, because the mean of its divisors is an integer number (2805630036).

Almost surely, 2^11221313321 is an apocalyptic number.

It is an amenable number.

11221313321 is a deficient number, since it is larger than the sum of its proper divisors (1206823).

11221313321 is an equidigital number, since it uses as much as digits as its factorization.

11221313321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206822.

The product of its digits is 216, while the sum is 20.

Adding to 11221313321 its reverse (12331312211), we get a palindrome (23552625532).

The spelling of 11221313321 in words is "eleven billion, two hundred twenty-one million, three hundred thirteen thousand, three hundred twenty-one".