9231221329 has 8 divisors (see below), whose sum is σ = 10071132480. Its totient is φ = 8391428400.

The previous prime is 9231221297. The next prime is 9231221339.

9231221329 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9231221329 - 2⁵ = 9231221297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9231221294 and 9231221303.

It is not an unprimeable number, because it can be changed into a prime (9231221339) 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 7 ways as a sum of consecutive naturals, for example, 243219 + ... + 278599.

It is an arithmetic number, because the mean of its divisors is an integer number (1258891560).

Almost surely, 2^9231221329 is an apocalyptic number.

It is an amenable number.

9231221329 is a deficient number, since it is larger than the sum of its proper divisors (839911151).

9231221329 is a wasteful number, since it uses less digits than its factorization.

9231221329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59111.

The product of its digits is 11664, while the sum is 34.

The square root of 9231221329 is about 96079.2450480331. The cubic root of 9231221329 is about 2097.7467387882.

The spelling of 9231221329 in words is "nine billion, two hundred thirty-one million, two hundred twenty-one thousand, three hundred twenty-nine".