1121331530 has 32 divisors (see below), whose sum is σ = 2229776640. Its totient is φ = 402592320.

The previous prime is 1121331529. The next prime is 1121331539. The reversal of 1121331530 is 351331211.

It is not an unprimeable number, because it can be changed into a prime (1121331539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55829 + ... + 73208.

It is an arithmetic number, because the mean of its divisors is an integer number (69680520).

Almost surely, 2^1121331530 is an apocalyptic number.

1121331530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121331530 is a deficient number, since it is larger than the sum of its proper divisors (1108445110).

1121331530 is a wasteful number, since it uses less digits than its factorization.

1121331530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129134.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 1121331530 is about 33486.2886865654. The cubic root of 1121331530 is about 1038.9102027247.

Adding to 1121331530 its reverse (351331211), we get a palindrome (1472662741).

The spelling of 1121331530 in words is "one billion, one hundred twenty-one million, three hundred thirty-one thousand, five hundred thirty".