121120321 has 8 divisors (see below), whose sum is σ = 138914624. Its totient is φ = 103448880.

The previous prime is 121120297. The next prime is 121120339. The reversal of 121120321 is 123021121.

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 121120321 - 2¹¹ = 121118273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121120361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28590 + ... + 32551.

It is an arithmetic number, because the mean of its divisors is an integer number (17364328).

Almost surely, 2^121120321 is an apocalyptic number.

It is an amenable number.

121120321 is a deficient number, since it is larger than the sum of its proper divisors (17794303).

121120321 is an equidigital number, since it uses as much as digits as its factorization.

121120321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61431.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 121120321 is about 11005.4677774277. The cubic root of 121120321 is about 494.7726344176.

Adding to 121120321 its reverse (123021121), we get a palindrome (244141442).

The spelling of 121120321 in words is "one hundred twenty-one million, one hundred twenty thousand, three hundred twenty-one".