201550013321 has 2 divisors, whose sum is σ = 201550013322. Its totient is φ = 201550013320.

The previous prime is 201550013293. The next prime is 201550013347. The reversal of 201550013321 is 123310055102.

It is a happy number.

201550013321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144543675721 + 57006337600 = 380189^2 + 238760^2 .

It is a cyclic number.

It is not a de Polignac number, because 201550013321 - 2¹⁰ = 201550012297 is a prime.

It is not a weakly prime, because it can be changed into another prime (201550063321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100775006660 + 100775006661.

It is an arithmetic number, because the mean of its divisors is an integer number (100775006661).

Almost surely, 2^201550013321 is an apocalyptic number.

It is an amenable number.

201550013321 is a deficient number, since it is larger than the sum of its proper divisors (1).

201550013321 is an equidigital number, since it uses as much as digits as its factorization.

201550013321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 201550013321 its reverse (123310055102), we get a palindrome (324860068423).

The spelling of 201550013321 in words is "two hundred one billion, five hundred fifty million, thirteen thousand, three hundred twenty-one".