121003321 has 8 divisors (see below), whose sum is σ = 123214088. Its totient is φ = 118800000.

The previous prime is 121003319. The next prime is 121003349. The reversal of 121003321 is 123300121.

It can be written as a sum of positive squares in 4 ways, for example, as 8410000 + 112593321 = 2900^2 + 10611^2 .

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 121003321 - 2¹ = 121003319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121003301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38821 + ... + 41821.

It is an arithmetic number, because the mean of its divisors is an integer number (15401761).

Almost surely, 2^121003321 is an apocalyptic number.

It is an amenable number.

121003321 is a deficient number, since it is larger than the sum of its proper divisors (2210767).

121003321 is an equidigital number, since it uses as much as digits as its factorization.

121003321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3723.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 121003321 is about 11000.1509535097. The cubic root of 121003321 is about 494.6132693403.

Adding to 121003321 its reverse (123300121), we get a palindrome (244303442).

The spelling of 121003321 in words is "one hundred twenty-one million, three thousand, three hundred twenty-one".