2001143121213 has 8 divisors (see below), whose sum is σ = 2668198018528. Its totient is φ = 1334091819024.

The previous prime is 2001143121181. The next prime is 2001143121217. The reversal of 2001143121213 is 3121213411002.

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

It is not a de Polignac number, because 2001143121213 - 2⁵ = 2001143121181 is a prime.

It is a super-2 number, since 2×2001143121213² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2001143121213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001143121217) 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, 933831 + ... + 2207787.

It is an arithmetic number, because the mean of its divisors is an integer number (333524752316).

Almost surely, 2^{2001143121213} is an apocalyptic number.

It is an amenable number.

2001143121213 is a deficient number, since it is larger than the sum of its proper divisors (667054897315).

2001143121213 is a wasteful number, since it uses less digits than its factorization.

2001143121213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797563.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 2001143121213 its reverse (3121213411002), we get a palindrome (5122356532215).

The spelling of 2001143121213 in words is "two trillion, one billion, one hundred forty-three million, one hundred twenty-one thousand, two hundred thirteen".