2001023311012 has 48 divisors (see below), whose sum is σ = 3952199664000. Its totient is φ = 878117506560.

The previous prime is 2001023310971. The next prime is 2001023311019. The reversal of 2001023311012 is 2101133201002.

It is not an unprimeable number, because it can be changed into a prime (2001023311019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16608364 + ... + 16728412.

It is an arithmetic number, because the mean of its divisors is an integer number (82337493000).

Almost surely, 2^{2001023311012} is an apocalyptic number.

2001023311012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2001023311012 is a deficient number, since it is larger than the sum of its proper divisors (1951176352988).

2001023311012 is a wasteful number, since it uses less digits than its factorization.

2001023311012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133156 (or 133154 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2001023311012 its reverse (2101133201002), we get a palindrome (4102156512014).

The spelling of 2001023311012 in words is "two trillion, one billion, twenty-three million, three hundred eleven thousand, twelve".