20011000201100 has 288 divisors, whose sum is σ = 47011220256000. Its totient is φ = 7369056414720.

The previous prime is 20011000201067. The next prime is 20011000201123. The reversal of 20011000201100 is 110200011002.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23295692471 + ... + 23295693329.

Almost surely, 2^{20011000201100} is an apocalyptic number.

20011000201100 is a gapful number since it is divisible by the number (20) 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 20011000201100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23505610128000).

20011000201100 is an abundant number, since it is smaller than the sum of its proper divisors (27000220054900).

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

20011000201100 is a wasteful number, since it uses less digits than its factorization.

20011000201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057 (or 2050 counting only the distinct ones).

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

Adding to 20011000201100 its reverse (110200011002), we get a palindrome (20121200212102).

The spelling of 20011000201100 in words is "twenty trillion, eleven billion, two hundred one thousand, one hundred".