204113213320321 has 8 divisors (see below), whose sum is σ = 207964765106280. Its totient is φ = 200261674833792.

The previous prime is 204113213320283. The next prime is 204113213320327. The reversal of 204113213320321 is 123023312311402.

It can be written as a sum of positive squares in 4 ways, for example, as 2663306497296 + 201449906823025 = 1631964^2 + 14193305^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204113213320321 is a prime.

It is a super-2 number, since 2×204113213320321² (a number of 29 digits) contains 22 as substring.

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 204113213320321.

It is not an unprimeable number, because it can be changed into a prime (204113213320327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30965085 + ... + 36973813.

It is an arithmetic number, because the mean of its divisors is an integer number (25995595638285).

Almost surely, 2^{204113213320321} is an apocalyptic number.

It is an amenable number.

204113213320321 is a deficient number, since it is larger than the sum of its proper divisors (3851551785959).

204113213320321 is an equidigital number, since it uses as much as digits as its factorization.

204113213320321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6649715.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 204113213320321 its reverse (123023312311402), we get a palindrome (327136525631723).

The spelling of 204113213320321 in words is "two hundred four trillion, one hundred thirteen billion, two hundred thirteen million, three hundred twenty thousand, three hundred twenty-one".