201321313223201 has 4 divisors (see below), whose sum is σ = 204079139431812. Its totient is φ = 198563487014592.

The previous prime is 201321313223189. The next prime is 201321313223227. The reversal of 201321313223201 is 102322313123102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 132086865339025 + 69234447884176 = 11492905^2 + 8320724^2 .

It is a cyclic number.

It is not a de Polignac number, because 201321313223201 - 2¹⁰ = 201321313222177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201321313223101) 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, 1378913104196 + ... + 1378913104341.

It is an arithmetic number, because the mean of its divisors is an integer number (51019784857953).

Almost surely, 2^{201321313223201} is an apocalyptic number.

It is an amenable number.

201321313223201 is a deficient number, since it is larger than the sum of its proper divisors (2757826208611).

201321313223201 is an equidigital number, since it uses as much as digits as its factorization.

201321313223201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2757826208610.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 201321313223201 its reverse (102322313123102), we get a palindrome (303643626346303).

It can be divided in two parts, 20132131 and 3223201, that added together give a palindrome (23355332).

The spelling of 201321313223201 in words is "two hundred one trillion, three hundred twenty-one billion, three hundred thirteen million, two hundred twenty-three thousand, two hundred one".