201100112101100 has 72 divisors (see below), whose sum is σ = 439216565424000. Its totient is φ = 79919358220800.

The previous prime is 201100112101039. The next prime is 201100112101127. The reversal of 201100112101100 is 1101211001102.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13691141 + ... + 24282659.

Almost surely, 2^{201100112101100} is an apocalyptic number.

201100112101100 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 201100112101100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219608282712000).

201100112101100 is an abundant number, since it is smaller than the sum of its proper divisors (238116453322900).

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

201100112101100 is a wasteful number, since it uses less digits than its factorization.

201100112101100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10592763 (or 10592756 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 201100112101100 its reverse (1101211001102), we get a palindrome (202201323102202).

The spelling of 201100112101100 in words is "two hundred one trillion, one hundred billion, one hundred twelve million, one hundred one thousand, one hundred".