321011221000201 has 2 divisors, whose sum is σ = 321011221000202. Its totient is φ = 321011221000200.

The previous prime is 321011221000193. The next prime is 321011221000331. The reversal of 321011221000201 is 102000122110123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208634769198025 + 112376451802176 = 14444195^2 + 10600776^2 .

It is an emirp because it is prime and its reverse (102000122110123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321011221000201 - 2³ = 321011221000193 is a prime.

It is not a weakly prime, because it can be changed into another prime (321011221003201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160505610500100 + 160505610500101.

It is an arithmetic number, because the mean of its divisors is an integer number (160505610500101).

Almost surely, 2^{321011221000201} is an apocalyptic number.

It is an amenable number.

321011221000201 is a deficient number, since it is larger than the sum of its proper divisors (1).

321011221000201 is an equidigital number, since it uses as much as digits as its factorization.

321011221000201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 321011221000201 its reverse (102000122110123), we get a palindrome (423011343110324).

The spelling of 321011221000201 in words is "three hundred twenty-one trillion, eleven billion, two hundred twenty-one million, two hundred one", and thus it is an aban number.