2001221101112 has 16 divisors (see below), whose sum is σ = 3761646901200. Its totient is φ = 998115260800.

The previous prime is 2001221101097. The next prime is 2001221101147. The reversal of 2001221101112 is 2111011221002.

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 3 ways as a sum of consecutive naturals, for example, 311907812 + ... + 311914227.

It is an arithmetic number, because the mean of its divisors is an integer number (235102931325).

Almost surely, 2^{2001221101112} is an apocalyptic number.

It is an amenable number.

2001221101112 is a deficient number, since it is larger than the sum of its proper divisors (1760425800088).

2001221101112 is a wasteful number, since it uses less digits than its factorization.

2001221101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623822446 (or 623822442 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2001221101112 its reverse (2111011221002), we get a palindrome (4112232322114).

The spelling of 2001221101112 in words is "two trillion, one billion, two hundred twenty-one million, one hundred one thousand, one hundred twelve".