201121303321 has 2 divisors, whose sum is σ = 201121303322. Its totient is φ = 201121303320.

The previous prime is 201121303303. The next prime is 201121303373. The reversal of 201121303321 is 123303121102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122544804096 + 78576499225 = 350064^2 + 280315^2 .

It is a cyclic number.

It is not a de Polignac number, because 201121303321 - 2¹¹ = 201121301273 is a prime.

It is not a weakly prime, because it can be changed into another prime (201121303391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100560651660 + 100560651661.

It is an arithmetic number, because the mean of its divisors is an integer number (100560651661).

Almost surely, 2^201121303321 is an apocalyptic number.

It is an amenable number.

201121303321 is a deficient number, since it is larger than the sum of its proper divisors (1).

201121303321 is an equidigital number, since it uses as much as digits as its factorization.

201121303321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 201121303321 its reverse (123303121102), we get a palindrome (324424424423).

The spelling of 201121303321 in words is "two hundred one billion, one hundred twenty-one million, three hundred three thousand, three hundred twenty-one".