1132320021 has 16 divisors (see below), whose sum is σ = 1725923328. Its totient is φ = 646858800.

The previous prime is 1132320019. The next prime is 1132320031. The reversal of 1132320021 is 1200232311.

It is not a de Polignac number, because 1132320021 - 2¹ = 1132320019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1132320031) 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 15 ways as a sum of consecutive naturals, for example, 116956 + ... + 126266.

It is an arithmetic number, because the mean of its divisors is an integer number (107870208).

Almost surely, 2^1132320021 is an apocalyptic number.

It is an amenable number.

1132320021 is a deficient number, since it is larger than the sum of its proper divisors (593603307).

1132320021 is an equidigital number, since it uses as much as digits as its factorization.

1132320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15112.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1132320021 is about 33649.9631649130. The cubic root of 1132320021 is about 1042.2927784849.

Adding to 1132320021 its reverse (1200232311), we get a palindrome (2332552332).

The spelling of 1132320021 in words is "one billion, one hundred thirty-two million, three hundred twenty thousand, twenty-one".