1123505122243 has 4 divisors (see below), whose sum is σ = 1284005854000. Its totient is φ = 963004390488.

The previous prime is 1123505122169. The next prime is 1123505122247. The reversal of 1123505122243 is 3422215053211.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-1123505122243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123505122247) 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, 80250365868 + ... + 80250365881.

It is an arithmetic number, because the mean of its divisors is an integer number (321001463500).

Almost surely, 2^{1123505122243} is an apocalyptic number.

1123505122243 is a deficient number, since it is larger than the sum of its proper divisors (160500731757).

1123505122243 is an equidigital number, since it uses as much as digits as its factorization.

1123505122243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160500731756.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 1123505122243 in words is "one trillion, one hundred twenty-three billion, five hundred five million, one hundred twenty-two thousand, two hundred forty-three".