11201020021000 has 64 divisors (see below), whose sum is σ = 26237382312960. Its totient is φ = 4475793400000.

The previous prime is 11201020020997. The next prime is 11201020021007. The reversal of 11201020021000 is 12002010211.

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

It is not an unprimeable number, because it can be changed into a prime (11201020021007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4796776 + ... + 6738775.

It is an arithmetic number, because the mean of its divisors is an integer number (409959098640).

Almost surely, 2^{11201020021000} is an apocalyptic number.

11201020021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11201020021000 is an abundant number, since it is smaller than the sum of its proper divisors (15036362291960).

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

11201020021000 is a wasteful number, since it uses less digits than its factorization.

11201020021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11536543 (or 11536529 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11201020021000 its reverse (12002010211), we get a palindrome (11213022031211).

The spelling of 11201020021000 in words is "eleven trillion, two hundred one billion, twenty million, twenty-one thousand".