1100112020020 has 36 divisors (see below), whose sum is σ = 2501615683980. Its totient is φ = 406195206144.

The previous prime is 1100112020009. The next prime is 1100112020123. The reversal of 1100112020020 is 200202110011.

It can be written as a sum of positive squares in 6 ways, for example, as 82829991204 + 1017282028816 = 287802^2 + 1008604^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1100112019979 and 1100112020006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162735085 + ... + 162741844.

It is an arithmetic number, because the mean of its divisors is an integer number (69489324555).

Almost surely, 2^{1100112020020} is an apocalyptic number.

1100112020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100112020020 is an abundant number, since it is smaller than the sum of its proper divisors (1401503663960).

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

1100112020020 is a wasteful number, since it uses less digits than its factorization.

1100112020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325476964 (or 325476949 counting only the distinct ones).

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

Adding to 1100112020020 its reverse (200202110011), we get a palindrome (1300314130031).

The spelling of 1100112020020 in words is "one trillion, one hundred billion, one hundred twelve million, twenty thousand, twenty".