201321110123 has 8 divisors (see below), whose sum is σ = 230521198848. Its totient is φ = 172231003944.

The previous prime is 201321110117. The next prime is 201321110141. The reversal of 201321110123 is 321011123102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201321110123 - 2¹⁸ = 201320847979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201321110113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27491711 + ... + 27499032.

It is an arithmetic number, because the mean of its divisors is an integer number (28815149856).

Almost surely, 2^201321110123 is an apocalyptic number.

201321110123 is a deficient number, since it is larger than the sum of its proper divisors (29200088725).

201321110123 is an equidigital number, since it uses as much as digits as its factorization.

201321110123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54991273.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 201321110123 its reverse (321011123102), we get a palindrome (522332233225).

The spelling of 201321110123 in words is "two hundred one billion, three hundred twenty-one million, one hundred ten thousand, one hundred twenty-three".