2001313212223 has 16 divisors (see below), whose sum is σ = 2156875078176. Its totient is φ = 1845982569600.

The previous prime is 2001313212181. The next prime is 2001313212233. The reversal of 2001313212223 is 3222123131002.

It is not a de Polignac number, because 2001313212223 - 2²¹ = 2001311115071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2001313212194 and 2001313212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001313212233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120183448 + ... + 120200098.

It is an arithmetic number, because the mean of its divisors is an integer number (134804692386).

Almost surely, 2^{2001313212223} is an apocalyptic number.

2001313212223 is a deficient number, since it is larger than the sum of its proper divisors (155561865953).

2001313212223 is a wasteful number, since it uses less digits than its factorization.

2001313212223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23034.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2001313212223 its reverse (3222123131002), we get a palindrome (5223436343225).

The spelling of 2001313212223 in words is "two trillion, one billion, three hundred thirteen million, two hundred twelve thousand, two hundred twenty-three".