2001102000 has 80 divisors (see below), whose sum is σ = 6451572192. Its totient is φ = 533625600.

The previous prime is 2001101989. The next prime is 2001102001. The reversal of 2001102000 is 2011002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 2001102000.

It is not an unprimeable number, because it can be changed into a prime (2001102001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160759 + ... + 172758.

Almost surely, 2^2001102000 is an apocalyptic number.

2001102000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001102000 is an abundant number, since it is smaller than the sum of its proper divisors (4450470192).

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

2001102000 is a wasteful number, since it uses less digits than its factorization.

2001102000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333543 (or 333527 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 2001102000 is about 44733.6785878380. The cubic root of 2001102000 is about 1260.1524129059.

Adding to 2001102000 its reverse (2011002), we get a palindrome (2003113002).

The spelling of 2001102000 in words is "two billion, one million, one hundred two thousand".