11100010020 has 144 divisors (see below), whose sum is σ = 34262289600. Its totient is φ = 2683042560.

The previous prime is 11100009979. The next prime is 11100010087. The reversal of 11100010020 is 2001000111.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 11100009990 and 11100010008.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2705931 + ... + 2710029.

Almost surely, 2^11100010020 is an apocalyptic number.

11100010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11100010020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17131144800).

11100010020 is an abundant number, since it is smaller than the sum of its proper divisors (23162279580).

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

11100010020 is a wasteful number, since it uses less digits than its factorization.

11100010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506 (or 4493 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 11100010020 its reverse (2001000111), we get a palindrome (13101010131).

Subtracting from 11100010020 its reverse (2001000111), we obtain a palindrome (9099009909).

The spelling of 11100010020 in words is "eleven billion, one hundred million, ten thousand, twenty".