320121121 has 4 divisors (see below), whose sum is σ = 320181552. Its totient is φ = 320060692.

The previous prime is 320121091. The next prime is 320121127. The reversal of 320121121 is 121121023.

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, and also an emirpimes, since its reverse is a distinct semiprime: 121121023 = 29 ⋅4176587.

It is a cyclic number.

It is not a de Polignac number, because 320121121 - 2⁷ = 320120993 is a prime.

It is a super-2 number, since 2×320121121² = 204955064220593282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320121127) 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 3 ways as a sum of consecutive naturals, for example, 21415 + ... + 33148.

It is an arithmetic number, because the mean of its divisors is an integer number (80045388).

Almost surely, 2^320121121 is an apocalyptic number.

It is an amenable number.

320121121 is a deficient number, since it is larger than the sum of its proper divisors (60431).

320121121 is an equidigital number, since it uses as much as digits as its factorization.

320121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60430.

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

The square root of 320121121 is about 17891.9289345783. The cubic root of 320121121 is about 684.0766652836.

Adding to 320121121 its reverse (121121023), we get a palindrome (441242144).

It can be divided in two parts, 32012 and 1121, that added together give a palindrome (33133).

The spelling of 320121121 in words is "three hundred twenty million, one hundred twenty-one thousand, one hundred twenty-one".