2001020111112 has 32 divisors (see below), whose sum is σ = 5457327576480. Its totient is φ = 606369730560.

The previous prime is 2001020111093. The next prime is 2001020111113. The reversal of 2001020111112 is 2111110201002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (2001020111113) 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 7 ways as a sum of consecutive naturals, for example, 3789810553 + ... + 3789811080.

It is an arithmetic number, because the mean of its divisors is an integer number (170541486765).

Almost surely, 2^{2001020111112} is an apocalyptic number.

2001020111112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2001020111112 is an abundant number, since it is smaller than the sum of its proper divisors (3456307465368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001020111112 is a wasteful number, since it uses less digits than its factorization.

2001020111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7579621653 (or 7579621649 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2001020111112 its reverse (2111110201002), we get a palindrome (4112130312114).

The spelling of 2001020111112 in words is "two trillion, one billion, twenty million, one hundred eleven thousand, one hundred twelve".