120320201321 has 4 divisors (see below), whose sum is σ = 123572098692. Its totient is φ = 117068303952.

The previous prime is 120320201303. The next prime is 120320201329. The reversal of 120320201321 is 123102023021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105358018921 + 14962182400 = 324589^2 + 122320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120320201321 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 120320201321.

It is not an unprimeable number, because it can be changed into a prime (120320201329) 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, 1625948630 + ... + 1625948703.

It is an arithmetic number, because the mean of its divisors is an integer number (30893024673).

Almost surely, 2^120320201321 is an apocalyptic number.

It is an amenable number.

120320201321 is a deficient number, since it is larger than the sum of its proper divisors (3251897371).

120320201321 is an equidigital number, since it uses as much as digits as its factorization.

120320201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3251897370.

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

Adding to 120320201321 its reverse (123102023021), we get a palindrome (243422224342).

The spelling of 120320201321 in words is "one hundred twenty billion, three hundred twenty million, two hundred one thousand, three hundred twenty-one".