204112301321 has 2 divisors, whose sum is σ = 204112301322. Its totient is φ = 204112301320.

The previous prime is 204112301311. The next prime is 204112301339. The reversal of 204112301321 is 123103211402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203458732096 + 653569225 = 451064^2 + 25565^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204112301321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204112301293 and 204112301302.

It is not a weakly prime, because it can be changed into another prime (204112301311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102056150660 + 102056150661.

It is an arithmetic number, because the mean of its divisors is an integer number (102056150661).

Almost surely, 2^204112301321 is an apocalyptic number.

It is an amenable number.

204112301321 is a deficient number, since it is larger than the sum of its proper divisors (1).

204112301321 is an equidigital number, since it uses as much as digits as its factorization.

204112301321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 204112301321 its reverse (123103211402), we get a palindrome (327215512723).

The spelling of 204112301321 in words is "two hundred four billion, one hundred twelve million, three hundred one thousand, three hundred twenty-one".