11221203305423 has 4 divisors (see below), whose sum is σ = 11225554298040. Its totient is φ = 11216852312808.

The previous prime is 11221203305413. The next prime is 11221203305537. The reversal of 11221203305423 is 32450330212211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11221203305423 - 2³⁸ = 10946325398479 is a prime.

It is a super-2 number, since 2×11221203305423² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221203305413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2175492440 + ... + 2175497597.

It is an arithmetic number, because the mean of its divisors is an integer number (2806388574510).

Almost surely, 2^{11221203305423} is an apocalyptic number.

11221203305423 is a deficient number, since it is larger than the sum of its proper divisors (4350992617).

11221203305423 is an equidigital number, since it uses as much as digits as its factorization.

11221203305423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350992616.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 11221203305423 its reverse (32450330212211), we get a palindrome (43671533517634).

The spelling of 11221203305423 in words is "eleven trillion, two hundred twenty-one billion, two hundred three million, three hundred five thousand, four hundred twenty-three".