11200423400321 has 4 divisors (see below), whose sum is σ = 11859271835652. Its totient is φ = 10541574964992.

The previous prime is 11200423400249. The next prime is 11200423400323. The reversal of 11200423400321 is 12300432400211.

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 9358160110321 + 1842263290000 = 3059111^2 + 1357300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11200423400321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11200423400323) 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, 329424217640 + ... + 329424217673.

It is an arithmetic number, because the mean of its divisors is an integer number (2964817958913).

Almost surely, 2^{11200423400321} is an apocalyptic number.

It is an amenable number.

11200423400321 is a deficient number, since it is larger than the sum of its proper divisors (658848435331).

11200423400321 is an equidigital number, since it uses as much as digits as its factorization.

11200423400321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658848435330.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 11200423400321 its reverse (12300432400211), we get a palindrome (23500855800532).

The spelling of 11200423400321 in words is "eleven trillion, two hundred billion, four hundred twenty-three million, four hundred thousand, three hundred twenty-one".