11001020000 has 120 divisors (see below), whose sum is σ = 27139981176. Its totient is φ = 4388096000.

The previous prime is 11001019999. The next prime is 11001020021. The reversal of 11001020000 is 2010011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11259512 + ... + 11260488.

Almost surely, 2^11001020000 is an apocalyptic number.

11001020000 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 11001020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13569990588).

11001020000 is an abundant number, since it is smaller than the sum of its proper divisors (16138961176).

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

11001020000 is an frugal number, since it uses more digits than its factorization.

11001020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570 (or 1547 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 5.

Adding to 11001020000 its reverse (2010011), we get a palindrome (11003030011).

The spelling of 11001020000 in words is "eleven billion, one million, twenty thousand".