11123121323 has 2 divisors, whose sum is σ = 11123121324. Its totient is φ = 11123121322.

The previous prime is 11123121239. The next prime is 11123121343. The reversal of 11123121323 is 32312132111.

It is a happy number.

It is an a-pointer prime, because the next prime (11123121343) can be obtained adding 11123121323 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11123121323 - 2¹⁰ = 11123120299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11123121295 and 11123121304.

It is not a weakly prime, because it can be changed into another prime (11123121343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561560661 + 5561560662.

It is an arithmetic number, because the mean of its divisors is an integer number (5561560662).

Almost surely, 2^11123121323 is an apocalyptic number.

11123121323 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123121323 is an equidigital number, since it uses as much as digits as its factorization.

11123121323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 20.

Adding to 11123121323 its reverse (32312132111), we get a palindrome (43435253434).

The spelling of 11123121323 in words is "eleven billion, one hundred twenty-three million, one hundred twenty-one thousand, three hundred twenty-three".