120121321 has 4 divisors (see below), whose sum is σ = 120600144. Its totient is φ = 119642500.

The previous prime is 120121319. The next prime is 120121333. The reversal of 120121321 is 123121021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120121321 - 2¹ = 120121319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120121301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239035 + ... + 239536.

It is an arithmetic number, because the mean of its divisors is an integer number (30150036).

Almost surely, 2^120121321 is an apocalyptic number.

It is an amenable number.

120121321 is a deficient number, since it is larger than the sum of its proper divisors (478823).

120121321 is an equidigital number, since it uses as much as digits as its factorization.

120121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478822.

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

The square root of 120121321 is about 10959.9872718904. The cubic root of 120121321 is about 493.4085829435.

Adding to 120121321 its reverse (123121021), we get a palindrome (243242342).

It can be divided in two parts, 1201 and 21321, that added together give a palindrome (22522).

The spelling of 120121321 in words is "one hundred twenty million, one hundred twenty-one thousand, three hundred twenty-one".