1121232321 has 16 divisors (see below), whose sum is σ = 1812093120. Its totient is φ = 679534560.

The previous prime is 1121232317. The next prime is 1121232341. The reversal of 1121232321 is 1232321211.

1121232321 is a `hidden beast` number, since 112 + 1 + 232 + 321 = 666.

It is not a de Polignac number, because 1121232321 - 2² = 1121232317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121232294 and 1121232303.

It is not an unprimeable number, because it can be changed into a prime (1121232341) 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, 1887300 + ... + 1887893.

It is an arithmetic number, because the mean of its divisors is an integer number (113255820).

Almost surely, 2^1121232321 is an apocalyptic number.

1121232321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121232321 is a deficient number, since it is larger than the sum of its proper divisors (690860799).

1121232321 is a wasteful number, since it uses less digits than its factorization.

1121232321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3775213 (or 3775207 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1121232321 is about 33484.8073161546. The cubic root of 1121232321 is about 1038.8795628769.

Adding to 1121232321 its reverse (1232321211), we get a palindrome (2353553532).

The spelling of 1121232321 in words is "one billion, one hundred twenty-one million, two hundred thirty-two thousand, three hundred twenty-one".