2001212112 has 20 divisors (see below), whose sum is σ = 5169798080. Its totient is φ = 667070688.

The previous prime is 2001212093. The next prime is 2001212117. The reversal of 2001212112 is 2112121002.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001212117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20845912 + ... + 20846007.

It is an arithmetic number, because the mean of its divisors is an integer number (258489904).

Almost surely, 2^2001212112 is an apocalyptic number.

It is an amenable number.

2001212112 is an abundant number, since it is smaller than the sum of its proper divisors (3168585968).

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

2001212112 is a wasteful number, since it uses less digits than its factorization.

2001212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41691930 (or 41691924 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2001212112 is about 44734.9093214684. The cubic root of 2001212112 is about 1260.1755260635.

Adding to 2001212112 its reverse (2112121002), we get a palindrome (4113333114).

The spelling of 2001212112 in words is "two billion, one million, two hundred twelve thousand, one hundred twelve".