11100020120000 has 280 divisors, whose sum is σ = 33306902554464. Its totient is φ = 3581853696000.

The previous prime is 11100020119957. The next prime is 11100020120023. The reversal of 11100020120000 is 2102000111.

It is a tau number, because it is divible by the number of its divisors (280).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 11100020120000.

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 39 ways as a sum of consecutive naturals, for example, 3594032 + ... + 5925968.

Almost surely, 2^{11100020120000} is an apocalyptic number.

11100020120000 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 11100020120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16653451277232).

11100020120000 is an abundant number, since it is smaller than the sum of its proper divisors (22206882434464).

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

11100020120000 is an equidigital number, since it uses as much as digits as its factorization.

11100020120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331993 (or 2331968 counting only the distinct ones).

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

Adding to 11100020120000 its reverse (2102000111), we get a palindrome (11102122120111).

The spelling of 11100020120000 in words is "eleven trillion, one hundred billion, twenty million, one hundred twenty thousand".