11031320220321 has 4 divisors (see below), whose sum is σ = 14708426960432. Its totient is φ = 7354213480212.

The previous prime is 11031320220317. The next prime is 11031320220331. The reversal of 11031320220321 is 12302202313011.

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 not a de Polignac number, because 11031320220321 - 2² = 11031320220317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11031320220331) 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, 1838553370051 + ... + 1838553370056.

It is an arithmetic number, because the mean of its divisors is an integer number (3677106740108).

Almost surely, 2^{11031320220321} is an apocalyptic number.

It is an amenable number.

11031320220321 is a deficient number, since it is larger than the sum of its proper divisors (3677106740111).

11031320220321 is an equidigital number, since it uses as much as digits as its factorization.

11031320220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3677106740110.

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

Adding to 11031320220321 its reverse (12302202313011), we get a palindrome (23333522533332).

The spelling of 11031320220321 in words is "eleven trillion, thirty-one billion, three hundred twenty million, two hundred twenty thousand, three hundred twenty-one".