20110112200000 has 84 divisors (see below), whose sum is σ = 49879312886844. Its totient is φ = 8044044800000.

The previous prime is 20110112199959. The next prime is 20110112200019. The reversal of 20110112200000 is 221101102.

It can be written as a sum of positive squares in 6 ways, for example, as 20079074217024 + 31037982976 = 4480968^2 + 176176^2 .

It is a super-2 number, since 2×20110112200000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a self number, because there is not a number n which added to its sum of digits gives 20110112200000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50075281 + ... + 50475280.

It is an arithmetic number, because the mean of its divisors is an integer number (593801343891).

Almost surely, 2^{20110112200000} is an apocalyptic number.

20110112200000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20110112200000 is an abundant number, since it is smaller than the sum of its proper divisors (29769200686844).

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

20110112200000 is an frugal number, since it uses more digits than its factorization.

20110112200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100550598 (or 100550568 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20110112200000 its reverse (221101102), we get a palindrome (20110333301102).

The spelling of 20110112200000 in words is "twenty trillion, one hundred ten billion, one hundred twelve million, two hundred thousand".