120320001321 has 16 divisors (see below), whose sum is σ = 173023931136. Its totient is φ = 73933042176.

The previous prime is 120320001311. The next prime is 120320001343. The reversal of 120320001321 is 123100023021.

It is not a de Polignac number, because 120320001321 - 2¹¹ = 120319999273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120320001321.

It is not an unprimeable number, because it can be changed into a prime (120320001311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2265825 + ... + 2318318.

It is an arithmetic number, because the mean of its divisors is an integer number (10813995696).

Almost surely, 2^120320001321 is an apocalyptic number.

It is an amenable number.

120320001321 is a deficient number, since it is larger than the sum of its proper divisors (52703929815).

120320001321 is a wasteful number, since it uses less digits than its factorization.

120320001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4584832.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 120320001321 its reverse (123100023021), we get a palindrome (243420024342).

The spelling of 120320001321 in words is "one hundred twenty billion, three hundred twenty million, one thousand, three hundred twenty-one".