11123203123223 has 4 divisors (see below), whose sum is σ = 11506761851640. Its totient is φ = 10739644394808.

The previous prime is 11123203123199. The next prime is 11123203123267. The reversal of 11123203123223 is 32232130232111.

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 11123203123223 - 2¹⁴ = 11123203106839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11123203123192 and 11123203123201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123203123283) 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, 191779364165 + ... + 191779364222.

It is an arithmetic number, because the mean of its divisors is an integer number (2876690462910).

Almost surely, 2^{11123203123223} is an apocalyptic number.

11123203123223 is a deficient number, since it is larger than the sum of its proper divisors (383558728417).

11123203123223 is an equidigital number, since it uses as much as digits as its factorization.

11123203123223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383558728416.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 11123203123223 its reverse (32232130232111), we get a palindrome (43355333355334).

The spelling of 11123203123223 in words is "eleven trillion, one hundred twenty-three billion, two hundred three million, one hundred twenty-three thousand, two hundred twenty-three".