1320322121 has 8 divisors (see below), whose sum is σ = 1371982080. Its totient is φ = 1269070992.

The previous prime is 1320322117. The next prime is 1320322127. The reversal of 1320322121 is 1212230231.

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 1320322121 - 2² = 1320322117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320322121.

It is not an unprimeable number, because it can be changed into a prime (1320322127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95615 + ... + 108548.

It is an arithmetic number, because the mean of its divisors is an integer number (171497760).

Almost surely, 2^1320322121 is an apocalyptic number.

It is an amenable number.

1320322121 is a deficient number, since it is larger than the sum of its proper divisors (51659959).

1320322121 is a wasteful number, since it uses less digits than its factorization.

1320322121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204415.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1320322121 is about 36336.2370231151. The cubic root of 1320322121 is about 1097.0505341065.

Adding to 1320322121 its reverse (1212230231), we get a palindrome (2532552352).

The spelling of 1320322121 in words is "one billion, three hundred twenty million, three hundred twenty-two thousand, one hundred twenty-one".