1121523516723 has 4 divisors (see below), whose sum is σ = 1495364688968. Its totient is φ = 747682344480.

The previous prime is 1121523516691. The next prime is 1121523516733. The reversal of 1121523516723 is 3276153251211.

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

It is not a de Polignac number, because 1121523516723 - 2⁵ = 1121523516691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121523516733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186920586118 + ... + 186920586123.

It is an arithmetic number, because the mean of its divisors is an integer number (373841172242).

Almost surely, 2^{1121523516723} is an apocalyptic number.

1121523516723 is a deficient number, since it is larger than the sum of its proper divisors (373841172245).

1121523516723 is an equidigital number, since it uses as much as digits as its factorization.

1121523516723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373841172244.

The product of its digits is 75600, while the sum is 39.

Adding to 1121523516723 its reverse (3276153251211), we get a palindrome (4397676767934).

The spelling of 1121523516723 in words is "one trillion, one hundred twenty-one billion, five hundred twenty-three million, five hundred sixteen thousand, seven hundred twenty-three".