2001231140212 has 96 divisors (see below), whose sum is σ = 3983860540800. Its totient is φ = 873892343808.

The previous prime is 2001231140191. The next prime is 2001231140213. The reversal of 2001231140212 is 2120411321002.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 2001231140212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001231140213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21067768 + ... + 21162544.

It is an arithmetic number, because the mean of its divisors is an integer number (41498547300).

Almost surely, 2^{2001231140212} is an apocalyptic number.

It is an amenable number.

2001231140212 is a deficient number, since it is larger than the sum of its proper divisors (1982629400588).

2001231140212 is a wasteful number, since it uses less digits than its factorization.

2001231140212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95153 (or 95151 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2001231140212 its reverse (2120411321002), we get a palindrome (4121642461214).

The spelling of 2001231140212 in words is "two trillion, one billion, two hundred thirty-one million, one hundred forty thousand, two hundred twelve".