2001221120112 has 40 divisors (see below), whose sum is σ = 5173150345104. Its totient is φ = 666644143104.

The previous prime is 2001221120077. The next prime is 2001221120141. The reversal of 2001221120112 is 2110211221002.

It is a junction number, because it is equal to n+sod(n) for n = 2001221120091 and 2001221120100.

It is a congruent number.

It is an unprimeable number.

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, 13348543 + ... + 13497630.

Almost surely, 2^{2001221120112} is an apocalyptic number.

It is an amenable number.

2001221120112 is an abundant number, since it is smaller than the sum of its proper divisors (3171929224992).

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

2001221120112 is a wasteful number, since it uses less digits than its factorization.

2001221120112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26847737 (or 26847731 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2001221120112 its reverse (2110211221002), we get a palindrome (4111432341114).

The spelling of 2001221120112 in words is "two trillion, one billion, two hundred twenty-one million, one hundred twenty thousand, one hundred twelve".