2100102000 has 160 divisors (see below), whose sum is σ = 6936681024. Its totient is φ = 546304000.

The previous prime is 2100101957. The next prime is 2100102001. The reversal of 2100102000 is 2010012.

It is a happy number.

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 2100102000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100102001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 241732 + ... + 250268.

Almost surely, 2^2100102000 is an apocalyptic number.

2100102000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2100102000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3468340512).

2100102000 is an abundant number, since it is smaller than the sum of its proper divisors (4836579024).

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

2100102000 is a wasteful number, since it uses less digits than its factorization.

2100102000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8604 (or 8588 counting only the distinct ones).

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

The square root of 2100102000 is about 45826.8698472850. The cubic root of 2100102000 is about 1280.5998978383.

Adding to 2100102000 its reverse (2010012), we get a palindrome (2102112012).

The spelling of 2100102000 in words is "two billion, one hundred million, one hundred two thousand".