201100120110 has 192 divisors, whose sum is σ = 564876509184. Its totient is φ = 49453747200.

The previous prime is 201100120099. The next prime is 201100120121. The reversal of 201100120110 is 11021001102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (201100120099) and next prime (201100120121).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 201100120092 and 201100120101.

It is a congruent number.

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, 19574275 + ... + 19584545.

It is an arithmetic number, because the mean of its divisors is an integer number (2942065152).

Almost surely, 2^201100120110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201100120110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282438254592).

201100120110 is an abundant number, since it is smaller than the sum of its proper divisors (363776389074).

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

201100120110 is a wasteful number, since it uses less digits than its factorization.

201100120110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10559 (or 10556 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 201100120110 its reverse (11021001102), we get a palindrome (212121121212).

The spelling of 201100120110 in words is "two hundred one billion, one hundred million, one hundred twenty thousand, one hundred ten".