1121321530528 has 48 divisors (see below), whose sum is σ = 2262791250720. Its totient is φ = 546688832256.

The previous prime is 1121321530489. The next prime is 1121321530531. The reversal of 1121321530528 is 8250351231211.

It is a junction number, because it is equal to n+sod(n) for n = 1121321530493 and 1121321530502.

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 7 ways as a sum of consecutive naturals, for example, 113578 + ... + 1501846.

It is an arithmetic number, because the mean of its divisors is an integer number (47141484390).

Almost surely, 2^{1121321530528} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121321530528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1131395625360).

1121321530528 is an abundant number, since it is smaller than the sum of its proper divisors (1141469720192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121321530528 is a wasteful number, since it uses less digits than its factorization.

1121321530528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388909 (or 1388901 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

Adding to 1121321530528 its reverse (8250351231211), we get a palindrome (9371672761739).

The spelling of 1121321530528 in words is "one trillion, one hundred twenty-one billion, three hundred twenty-one million, five hundred thirty thousand, five hundred twenty-eight".