2001110120 has 32 divisors (see below), whose sum is σ = 4767352200. Its totient is φ = 753358848.

The previous prime is 2001110119. The next prime is 2001110129. The reversal of 2001110120 is 210111002.

It can be written as a sum of positive squares in 4 ways, for example, as 1969051876 + 32058244 = 44374^2 + 5662^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 2001110098 and 2001110107.

It is not an unprimeable number, because it can be changed into a prime (2001110129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1470725 + ... + 1472084.

Almost surely, 2^2001110120 is an apocalyptic number.

2001110120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001110120 is an abundant number, since it is smaller than the sum of its proper divisors (2766242080).

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

2001110120 is a wasteful number, since it uses less digits than its factorization.

2001110120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2942837 (or 2942833 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 2001110120 is about 44733.7693471051. The cubic root of 2001110120 is about 1260.1541173707.

Adding to 2001110120 its reverse (210111002), we get a palindrome (2211221122).

The spelling of 2001110120 in words is "two billion, one million, one hundred ten thousand, one hundred twenty".