1121506730843 has 4 divisors (see below), whose sum is σ = 1128933927888. Its totient is φ = 1114079533800.

The previous prime is 1121506730791. The next prime is 1121506730863. The reversal of 1121506730843 is 3480376051211.

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 1121506730843 - 2³⁸ = 846628823899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121506730843.

It is not an unprimeable number, because it can be changed into a prime (1121506730863) 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, 3713598296 + ... + 3713598597.

It is an arithmetic number, because the mean of its divisors is an integer number (282233481972).

Almost surely, 2^{1121506730843} is an apocalyptic number.

1121506730843 is a deficient number, since it is larger than the sum of its proper divisors (7427197045).

1121506730843 is an equidigital number, since it uses as much as digits as its factorization.

1121506730843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7427197044.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 1121506730843 in words is "one trillion, one hundred twenty-one billion, five hundred six million, seven hundred thirty thousand, eight hundred forty-three".