11001000100020 has 96 divisors (see below), whose sum is σ = 35340178099968. Its totient is φ = 2504730181632.

The previous prime is 11001000100009. The next prime is 11001000100049. The reversal of 11001000100020 is 2000100010011.

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 = 11001000099981 and 11001000100008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50850927 + ... + 51066806.

It is an arithmetic number, because the mean of its divisors is an integer number (368126855208).

Almost surely, 2^{11001000100020} is an apocalyptic number.

11001000100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11001000100020 is an abundant number, since it is smaller than the sum of its proper divisors (24339177999948).

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

11001000100020 is a wasteful number, since it uses less digits than its factorization.

11001000100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101918009 (or 101918007 counting only the distinct ones).

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

Adding to 11001000100020 its reverse (2000100010011), we get a palindrome (13001100110031).

Subtracting from 11001000100020 its reverse (2000100010011), we obtain a palindrome (9000900090009).

The spelling of 11001000100020 in words is "eleven trillion, one billion, one hundred thousand, twenty".