2001102100240 has 40 divisors (see below), whose sum is σ = 4652721456768. Its totient is φ = 800413472640.

The previous prime is 2001102100219. The next prime is 2001102100241. The reversal of 2001102100240 is 420012011002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 2001102100240.

It is not an unprimeable number, because it can be changed into a prime (2001102100241) 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 7 ways as a sum of consecutive naturals, for example, 2013385 + ... + 2838295.

Almost surely, 2^{2001102100240} is an apocalyptic number.

2001102100240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001102100240 is an abundant number, since it is smaller than the sum of its proper divisors (2651619356528).

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

2001102100240 is a wasteful number, since it uses less digits than its factorization.

2001102100240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855247 (or 855241 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2001102100240 its reverse (420012011002), we get a palindrome (2421114111242).

The spelling of 2001102100240 in words is "two trillion, one billion, one hundred two million, one hundred thousand, two hundred forty".