11000100021020 has 96 divisors (see below), whose sum is σ = 25304041598976. Its totient is φ = 3983574156800.

The previous prime is 11000100021019. The next prime is 11000100021067. The reversal of 11000100021020 is 2012000100011.

It is a junction number, because it is equal to n+sod(n) for n = 11000100020989 and 11000100021007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112649057 + ... + 112746663.

It is an arithmetic number, because the mean of its divisors is an integer number (263583766656).

Almost surely, 2^{11000100021020} is an apocalyptic number.

11000100021020 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 11000100021020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12652020799488).

11000100021020 is an abundant number, since it is smaller than the sum of its proper divisors (14303941577956).

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

11000100021020 is a wasteful number, since it uses less digits than its factorization.

11000100021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99731 (or 99729 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 11000100021020 its reverse (2012000100011), we get a palindrome (13012100121031).

The spelling of 11000100021020 in words is "eleven trillion, one hundred million, twenty-one thousand, twenty".