20112111102112 has 12 divisors (see below), whose sum is σ = 39595718732346. Its totient is φ = 10056055551040.

The previous prime is 20112111102071. The next prime is 20112111102113. The reversal of 20112111102112 is 21120111121102.

It can be written as a sum of positive squares in only one way, i.e., 19932331710096 + 179779392016 = 4464564^2 + 424004^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (20112111102113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314251735939 + ... + 314251736002.

Almost surely, 2^{20112111102112} is an apocalyptic number.

It is an amenable number.

20112111102112 is a deficient number, since it is larger than the sum of its proper divisors (19483607630234).

20112111102112 is an equidigital number, since it uses as much as digits as its factorization.

20112111102112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628503471951 (or 628503471943 counting only the distinct ones).

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

Adding to 20112111102112 its reverse (21120111121102), we get a palindrome (41232222223214).

The spelling of 20112111102112 in words is "twenty trillion, one hundred twelve billion, one hundred eleven million, one hundred two thousand, one hundred twelve".