201321331301 has 4 divisors (see below), whose sum is σ = 213163762572. Its totient is φ = 189478900032.

The previous prime is 201321331247. The next prime is 201321331313. The reversal of 201321331301 is 103133123102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 103133123102 = 2 ⋅51566561551.

It can be written as a sum of positive squares in 2 ways, for example, as 87408331201 + 113913000100 = 295649^2 + 337510^2 .

It is a cyclic number.

It is not a de Polignac number, because 201321331301 - 2¹⁰ = 201321330277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201321331801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5921215610 + ... + 5921215643.

It is an arithmetic number, because the mean of its divisors is an integer number (53290940643).

Almost surely, 2^201321331301 is an apocalyptic number.

It is an amenable number.

201321331301 is a deficient number, since it is larger than the sum of its proper divisors (11842431271).

201321331301 is a wasteful number, since it uses less digits than its factorization.

201321331301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11842431270.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 201321331301 its reverse (103133123102), we get a palindrome (304454454403).

The spelling of 201321331301 in words is "two hundred one billion, three hundred twenty-one million, three hundred thirty-one thousand, three hundred one".