1121003121445 has 16 divisors (see below), whose sum is σ = 1424488243248. Its totient is φ = 843957637120.

The previous prime is 1121003121437. The next prime is 1121003121451. The reversal of 1121003121445 is 5441213001211.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 204497501796 + 916505619649 = 452214^2 + 957343^2 .

It is not a de Polignac number, because 1121003121445 - 2³ = 1121003121437 is a prime.

It is a Duffinian number.

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, 74505 + ... + 1499185.

It is an arithmetic number, because the mean of its divisors is an integer number (89030515203).

Almost surely, 2^{1121003121445} is an apocalyptic number.

It is an amenable number.

1121003121445 is a deficient number, since it is larger than the sum of its proper divisors (303485121803).

1121003121445 is a wasteful number, since it uses less digits than its factorization.

1121003121445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433960.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 1121003121445 its reverse (5441213001211), we get a palindrome (6562216122656).

The spelling of 1121003121445 in words is "one trillion, one hundred twenty-one billion, three million, one hundred twenty-one thousand, four hundred forty-five".