2001233111112 has 128 divisors (see below), whose sum is σ = 5784376665600. Its totient is φ = 640565812224.

The previous prime is 2001233111081. The next prime is 2001233111117. The reversal of 2001233111112 is 2111113321002.

2001233111112 is a `hidden beast` number, since 200 + 12 + 331 + 11 + 112 = 666.

It is a super-3 number, since 3×2001233111112³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2001233111117) 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, 1321633 + ... + 2397744.

It is an arithmetic number, because the mean of its divisors is an integer number (45190442700).

Almost surely, 2^{2001233111112} is an apocalyptic number.

It is an amenable number.

2001233111112 is an abundant number, since it is smaller than the sum of its proper divisors (3783143554488).

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

2001233111112 is a wasteful number, since it uses less digits than its factorization.

2001233111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3719492 (or 3719482 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 2001233111112 its reverse (2111113321002), we get a palindrome (4112346432114).

The spelling of 2001233111112 in words is "two trillion, one billion, two hundred thirty-three million, one hundred eleven thousand, one hundred twelve".