20121112112 has 20 divisors (see below), whose sum is σ = 39935501256. Its totient is φ = 9815176320.

The previous prime is 20121112111. The next prime is 20121112159. The reversal of 20121112112 is 21121112102.

It is not an unprimeable number, because it can be changed into a prime (20121112111) by changing a digit.

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, 15335558 + ... + 15336869.

Almost surely, 2^20121112112 is an apocalyptic number.

It is an amenable number.

20121112112 is a deficient number, since it is larger than the sum of its proper divisors (19814389144).

20121112112 is a wasteful number, since it uses less digits than its factorization.

20121112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30672476 (or 30672470 counting only the distinct ones).

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

Adding to 20121112112 its reverse (21121112102), we get a palindrome (41242224214).

The spelling of 20121112112 in words is "twenty billion, one hundred twenty-one million, one hundred twelve thousand, one hundred twelve".