11222203312321 has 4 divisors (see below), whose sum is σ = 11229740052100. Its totient is φ = 11214666572544.

The previous prime is 11222203312303. The next prime is 11222203312337. The reversal of 11222203312321 is 12321330222211.

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 1516087377025 + 9706115935296 = 1231295^2 + 3115464^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11222203312321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11222203310321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3768367656 + ... + 3768370633.

It is an arithmetic number, because the mean of its divisors is an integer number (2807435013025).

Almost surely, 2^{11222203312321} is an apocalyptic number.

It is an amenable number.

11222203312321 is a deficient number, since it is larger than the sum of its proper divisors (7536739779).

11222203312321 is an equidigital number, since it uses as much as digits as its factorization.

11222203312321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7536739778.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 11222203312321 its reverse (12321330222211), we get a palindrome (23543533534532).

The spelling of 11222203312321 in words is "eleven trillion, two hundred twenty-two billion, two hundred three million, three hundred twelve thousand, three hundred twenty-one".