20111001100112 has 80 divisors (see below), whose sum is σ = 42013653454080. Its totient is φ = 9270663830016.

The previous prime is 20111001100111. The next prime is 20111001100199. The reversal of 20111001100112 is 21100110011102.

It is a junction number, because it is equal to n+sod(n) for n = 20111001100093 and 20111001100102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111001100111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 839450438 + ... + 839474394.

It is an arithmetic number, because the mean of its divisors is an integer number (525170668176).

Almost surely, 2^{20111001100112} is an apocalyptic number.

It is an amenable number.

20111001100112 is an abundant number, since it is smaller than the sum of its proper divisors (21902652353968).

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

20111001100112 is a wasteful number, since it uses less digits than its factorization.

20111001100112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28740 (or 28734 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 20111001100112 its reverse (21100110011102), we get a palindrome (41211111111214).

The spelling of 20111001100112 in words is "twenty trillion, one hundred eleven billion, one million, one hundred thousand, one hundred twelve".