2001112133213 has 4 divisors (see below), whose sum is σ = 2015508623520. Its totient is φ = 1986715642908.

The previous prime is 2001112133197. The next prime is 2001112133221. The reversal of 2001112133213 is 3123312111002.

It is a happy number.

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 2001112133213 - 2⁴ = 2001112133197 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 (2001112133113) 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, 7198244945 + ... + 7198245222.

It is an arithmetic number, because the mean of its divisors is an integer number (503877155880).

Almost surely, 2^{2001112133213} is an apocalyptic number.

It is an amenable number.

2001112133213 is a deficient number, since it is larger than the sum of its proper divisors (14396490307).

2001112133213 is a wasteful number, since it uses less digits than its factorization.

2001112133213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14396490306.

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

Adding to 2001112133213 its reverse (3123312111002), we get a palindrome (5124424244215).

The spelling of 2001112133213 in words is "two trillion, one billion, one hundred twelve million, one hundred thirty-three thousand, two hundred thirteen".