2001121112 has 32 divisors (see below), whose sum is σ = 3849914880. Its totient is φ = 974557440.

The previous prime is 2001121099. The next prime is 2001121117. The reversal of 2001121112 is 2111211002.

It is a junction number, because it is equal to n+sod(n) for n = 2001121093 and 2001121102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001121117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209513 + ... + 218855.

It is an arithmetic number, because the mean of its divisors is an integer number (120309840).

Almost surely, 2^2001121112 is an apocalyptic number.

It is an amenable number.

2001121112 is a deficient number, since it is larger than the sum of its proper divisors (1848793768).

2001121112 is a wasteful number, since it uses less digits than its factorization.

2001121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10043 (or 10039 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2001121112 is about 44733.8922071398. The cubic root of 2001121112 is about 1260.1564246881.

Adding to 2001121112 its reverse (2111211002), we get a palindrome (4112332114).

The spelling of 2001121112 in words is "two billion, one million, one hundred twenty-one thousand, one hundred twelve".