11101021100020 has 24 divisors (see below), whose sum is σ = 23313005389800. Its totient is φ = 4440244424832.

The previous prime is 11101021100011. The next prime is 11101021100023. The reversal of 11101021100020 is 2000112010111.

11101021100020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2860515985636 + 8240505114384 = 1691306^2 + 2870628^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101021100023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9695215 + ... + 10779574.

It is an arithmetic number, because the mean of its divisors is an integer number (971375224575).

Almost surely, 2^{11101021100020} is an apocalyptic number.

11101021100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11101021100020 is an abundant number, since it is smaller than the sum of its proper divisors (12211984289780).

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

11101021100020 is a wasteful number, since it uses less digits than its factorization.

11101021100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20501907 (or 20501905 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11101021100020 its reverse (2000112010111), we get a palindrome (13101133110131).

It can be divided in two parts, 1110102 and 1100020, that added together give a palindrome (2210122).

The spelling of 11101021100020 in words is "eleven trillion, one hundred one billion, twenty-one million, one hundred thousand, twenty".