20321321201201 has 2 divisors, whose sum is σ = 20321321201202. Its totient is φ = 20321321201200.

The previous prime is 20321321201183. The next prime is 20321321201213. The reversal of 20321321201201 is 10210212312302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19762923693601 + 558397507600 = 4445551^2 + 747260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20321321201201 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20321321201221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160660600600 + 10160660600601.

It is an arithmetic number, because the mean of its divisors is an integer number (10160660600601).

Almost surely, 2^{20321321201201} is an apocalyptic number.

It is an amenable number.

20321321201201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20321321201201 is an equidigital number, since it uses as much as digits as its factorization.

20321321201201 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20321321201201 its reverse (10210212312302), we get a palindrome (30531533513503).

The spelling of 20321321201201 in words is "twenty trillion, three hundred twenty-one billion, three hundred twenty-one million, two hundred one thousand, two hundred one".