1121306872445 has 16 divisors (see below), whose sum is σ = 1406862680832. Its totient is φ = 856337623680.

The previous prime is 1121306872391. The next prime is 1121306872453. The reversal of 1121306872445 is 5442786031211.

It is a happy number.

It is not a de Polignac number, because 1121306872445 - 2²⁴ = 1121290095229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121306872396 and 1121306872405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9634496 + ... + 9750185.

It is an arithmetic number, because the mean of its divisors is an integer number (87928917552).

Almost surely, 2^{1121306872445} is an apocalyptic number.

It is an amenable number.

1121306872445 is a deficient number, since it is larger than the sum of its proper divisors (285555808387).

1121306872445 is a wasteful number, since it uses less digits than its factorization.

1121306872445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19385212.

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 1121306872445 in words is "one trillion, one hundred twenty-one billion, three hundred six million, eight hundred seventy-two thousand, four hundred forty-five".