201321310001 has 4 divisors (see below), whose sum is σ = 230081497152. Its totient is φ = 172561122852.

The previous prime is 201321309989. The next prime is 201321310009. The reversal of 201321310001 is 100013123102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201321310001 - 2¹⁸ = 201321047857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201321310009) 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, 14380093565 + ... + 14380093578.

It is an arithmetic number, because the mean of its divisors is an integer number (57520374288).

Almost surely, 2^201321310001 is an apocalyptic number.

It is an amenable number.

201321310001 is a deficient number, since it is larger than the sum of its proper divisors (28760187151).

201321310001 is an equidigital number, since it uses as much as digits as its factorization.

201321310001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28760187150.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 201321310001 its reverse (100013123102), we get a palindrome (301334433103).

The spelling of 201321310001 in words is "two hundred one billion, three hundred twenty-one million, three hundred ten thousand, one".