11100110200020 has 72 divisors (see below), whose sum is σ = 33814842273576. Its totient is φ = 2947325386752.

The previous prime is 11100110200013. The next prime is 11100110200037. The reversal of 11100110200020 is 2000201100111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1959960800196 + 9140149399824 = 1399986^2 + 3023268^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11100110199975 and 11100110200011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132291277 + ... + 132375156.

It is an arithmetic number, because the mean of its divisors is an integer number (469650587133).

Almost surely, 2^{11100110200020} is an apocalyptic number.

11100110200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11100110200020 is an abundant number, since it is smaller than the sum of its proper divisors (22714732073556).

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

11100110200020 is a wasteful number, since it uses less digits than its factorization.

11100110200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264666681 (or 264666676 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11100110200020 its reverse (2000201100111), we get a palindrome (13100311300131).

Subtracting from 11100110200020 its reverse (2000201100111), we obtain a palindrome (9099909099909).

The spelling of 11100110200020 in words is "eleven trillion, one hundred billion, one hundred ten million, two hundred thousand, twenty".