20110110201 has 12 divisors (see below), whose sum is σ = 29304999828. Its totient is φ = 13288095744.

The previous prime is 20110110187. The next prime is 20110110239. The reversal of 20110110201 is 10201101102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1576010601 + 18534099600 = 39699^2 + 136140^2 .

It is not a de Polignac number, because 20110110201 - 2⁹ = 20110109689 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (20110110901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9885960 + ... + 9887993.

It is an arithmetic number, because the mean of its divisors is an integer number (2442083319).

Almost surely, 2^20110110201 is an apocalyptic number.

It is an amenable number.

20110110201 is a deficient number, since it is larger than the sum of its proper divisors (9194889627).

20110110201 is a wasteful number, since it uses less digits than its factorization.

20110110201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19774072 (or 19774069 counting only the distinct ones).

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

Adding to 20110110201 its reverse (10201101102), we get a palindrome (30311211303).

Subtracting from 20110110201 its reverse (10201101102), we obtain a palindrome (9909009099).

The spelling of 20110110201 in words is "twenty billion, one hundred ten million, one hundred ten thousand, two hundred one".