320012200121 has 4 divisors (see below), whose sum is σ = 320075461200. Its totient is φ = 319948939044.

The previous prime is 320012200069. The next prime is 320012200129. The reversal of 320012200121 is 121002210023.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 320012200121 - 2³⁴ = 302832330937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320012200096 and 320012200105.

It is not an unprimeable number, because it can be changed into a prime (320012200129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31622951 + ... + 31633068.

It is an arithmetic number, because the mean of its divisors is an integer number (80018865300).

Almost surely, 2^320012200121 is an apocalyptic number.

It is an amenable number.

320012200121 is a deficient number, since it is larger than the sum of its proper divisors (63261079).

320012200121 is an equidigital number, since it uses as much as digits as its factorization.

320012200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63261078.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 320012200121 its reverse (121002210023), we get a palindrome (441014410144).

The spelling of 320012200121 in words is "three hundred twenty billion, twelve million, two hundred thousand, one hundred twenty-one".