2001323213111 has 8 divisors (see below), whose sum is σ = 2011732488624. Its totient is φ = 1990914347520.

The previous prime is 2001323213083. The next prime is 2001323213161. The reversal of 2001323213111 is 1113123231002.

It is a happy number.

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 2001323213111 - 2⁶ = 2001323213047 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 (2001323213161) 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, 17652596 + ... + 17765606.

It is an arithmetic number, because the mean of its divisors is an integer number (251466561078).

Almost surely, 2^{2001323213111} is an apocalyptic number.

2001323213111 is a deficient number, since it is larger than the sum of its proper divisors (10409275513).

2001323213111 is a wasteful number, since it uses less digits than its factorization.

2001323213111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204961.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2001323213111 its reverse (1113123231002), we get a palindrome (3114446444113).

The spelling of 2001323213111 in words is "two trillion, one billion, three hundred twenty-three million, two hundred thirteen thousand, one hundred eleven".