201110001012220 has 96 divisors (see below), whose sum is σ = 448679891358720. Its totient is φ = 75506456413440.

The previous prime is 201110001012209. The next prime is 201110001012229. The reversal of 201110001012220 is 22210100011102.

It is a self number, because there is not a number n which added to its sum of digits gives 201110001012220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201110001012229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15844765 + ... + 25559275.

It is an arithmetic number, because the mean of its divisors is an integer number (4673748868320).

Almost surely, 2^{201110001012220} is an apocalyptic number.

201110001012220 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 201110001012220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224339945679360).

201110001012220 is an abundant number, since it is smaller than the sum of its proper divisors (247569890346500).

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

201110001012220 is a wasteful number, since it uses less digits than its factorization.

201110001012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9715043 (or 9715041 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201110001012220 its reverse (22210100011102), we get a palindrome (223320101023322).

The spelling of 201110001012220 in words is "two hundred one trillion, one hundred ten billion, one million, twelve thousand, two hundred twenty".