20323312100321 has 2 divisors, whose sum is σ = 20323312100322. Its totient is φ = 20323312100320.

The previous prime is 20323312100317. The next prime is 20323312100363. The reversal of 20323312100321 is 12300121332302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13547515683025 + 6775796417296 = 3680695^2 + 2603036^2 .

It is a cyclic number.

It is not a de Polignac number, because 20323312100321 - 2² = 20323312100317 is a prime.

It is not a weakly prime, because it can be changed into another prime (20323312100621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161656050160 + 10161656050161.

It is an arithmetic number, because the mean of its divisors is an integer number (10161656050161).

Almost surely, 2^{20323312100321} is an apocalyptic number.

It is an amenable number.

20323312100321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20323312100321 is an equidigital number, since it uses as much as digits as its factorization.

20323312100321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 20323312100321 its reverse (12300121332302), we get a palindrome (32623433432623).

The spelling of 20323312100321 in words is "twenty trillion, three hundred twenty-three billion, three hundred twelve million, one hundred thousand, three hundred twenty-one".