320101121 has 4 divisors (see below), whose sum is σ = 320137044. Its totient is φ = 320065200.

The previous prime is 320101039. The next prime is 320101139. The reversal of 320101121 is 121101023.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 22193521 + 297907600 = 4711^2 + 17260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320101121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320101141) 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, 6611 + ... + 26151.

It is an arithmetic number, because the mean of its divisors is an integer number (80034261).

Almost surely, 2^320101121 is an apocalyptic number.

It is an amenable number.

320101121 is a deficient number, since it is larger than the sum of its proper divisors (35923).

320101121 is a wasteful number, since it uses less digits than its factorization.

320101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35922.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 320101121 is about 17891.3700146188. The cubic root of 320101121 is about 684.0624187820.

Adding to 320101121 its reverse (121101023), we get a palindrome (441202144).

The spelling of 320101121 in words is "three hundred twenty million, one hundred one thousand, one hundred twenty-one".