201120110001 has 20 divisors (see below), whose sum is σ = 300674106612. Its totient is φ = 133975008288.

The previous prime is 201120109987. The next prime is 201120110041. The reversal of 201120110001 is 100011021102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 164491891776 + 36628218225 = 405576^2 + 191385^2 .

It is not a de Polignac number, because 201120110001 - 2²² = 201115915697 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 (201120110041) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 868750 + ... + 1075623.

Almost surely, 2^201120110001 is an apocalyptic number.

It is an amenable number.

201120110001 is a deficient number, since it is larger than the sum of its proper divisors (99553996611).

201120110001 is a wasteful number, since it uses less digits than its factorization.

201120110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945662 (or 1945653 counting only the distinct ones).

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

Adding to 201120110001 its reverse (100011021102), we get a palindrome (301131131103).

It can be divided in two parts, 2011201 and 10001, that added together give a palindrome (2021202).

The spelling of 201120110001 in words is "two hundred one billion, one hundred twenty million, one hundred ten thousand, one".