1121533533 has 20 divisors (see below), whose sum is σ = 1696594240. Its totient is φ = 738220392.

The previous prime is 1121533513. The next prime is 1121533541. The reversal of 1121533533 is 3353351211.

1121533533 is a `hidden beast` number, since 1 + 121 + 5 + 3 + 3 + 533 = 666.

It is not a de Polignac number, because 1121533533 - 2⁸ = 1121533277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121533497 and 1121533506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121533513) 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 19 ways as a sum of consecutive naturals, for example, 81235 + ... + 94032.

It is an arithmetic number, because the mean of its divisors is an integer number (84829712).

Almost surely, 2^1121533533 is an apocalyptic number.

It is an amenable number.

1121533533 is a deficient number, since it is larger than the sum of its proper divisors (575060707).

1121533533 is an equidigital number, since it uses as much as digits as its factorization.

1121533533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175358 (or 175349 counting only the distinct ones).

The product of its digits is 4050, while the sum is 27.

The square root of 1121533533 is about 33489.3047553991. The cubic root of 1121533533 is about 1038.9725840310.

Adding to 1121533533 its reverse (3353351211), we get a palindrome (4474884744).

The spelling of 1121533533 in words is "one billion, one hundred twenty-one million, five hundred thirty-three thousand, five hundred thirty-three".