201023111202013 has 4 divisors (see below), whose sum is σ = 201031465954108. Its totient is φ = 201014756449920.

The previous prime is 201023111202007. The next prime is 201023111202031. The reversal of 201023111202013 is 310202111320102.

201023111202013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 192819801805849 + 8203309396164 = 13885957^2 + 2864142^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201023111202013 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 (201023111202413) 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, 4177339956 + ... + 4177388077.

It is an arithmetic number, because the mean of its divisors is an integer number (50257866488527).

Almost surely, 2^{201023111202013} is an apocalyptic number.

It is an amenable number.

201023111202013 is a deficient number, since it is larger than the sum of its proper divisors (8354752095).

201023111202013 is an equidigital number, since it uses as much as digits as its factorization.

201023111202013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8354752094.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 201023111202013 its reverse (310202111320102), we get a palindrome (511225222522115).

The spelling of 201023111202013 in words is "two hundred one trillion, twenty-three billion, one hundred eleven million, two hundred two thousand, thirteen".