11820144223 has 4 divisors (see below), whose sum is σ = 11899474200. Its totient is φ = 11740814248.

The previous prime is 11820144181. The next prime is 11820144227. The reversal of 11820144223 is 32244102811.

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 11820144223 - 2⁹ = 11820143711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11820144191 and 11820144200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11820144227) 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, 39664765 + ... + 39665062.

It is an arithmetic number, because the mean of its divisors is an integer number (2974868550).

Almost surely, 2^11820144223 is an apocalyptic number.

11820144223 is a deficient number, since it is larger than the sum of its proper divisors (79329977).

11820144223 is an equidigital number, since it uses as much as digits as its factorization.

11820144223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79329976.

The product of its (nonzero) digits is 3072, while the sum is 28.

The spelling of 11820144223 in words is "eleven billion, eight hundred twenty million, one hundred forty-four thousand, two hundred twenty-three".