1133011561521 has 24 divisors (see below), whose sum is σ = 1860696061920. Its totient is φ = 609350754432.

The previous prime is 1133011561499. The next prime is 1133011561529. The reversal of 1133011561521 is 1251651103311.

It is not a de Polignac number, because 1133011561521 - 2¹⁰ = 1133011560497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1133011561529) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 226690491 + ... + 226695488.

It is an arithmetic number, because the mean of its divisors is an integer number (77529002580).

Almost surely, 2^{1133011561521} is an apocalyptic number.

It is an amenable number.

1133011561521 is a deficient number, since it is larger than the sum of its proper divisors (727684500399).

1133011561521 is a wasteful number, since it uses less digits than its factorization.

1133011561521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453386013 (or 453386006 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 30.

Adding to 1133011561521 its reverse (1251651103311), we get a palindrome (2384662664832).

The spelling of 1133011561521 in words is "one trillion, one hundred thirty-three billion, eleven million, five hundred sixty-one thousand, five hundred twenty-one".