2102001100002 has 48 divisors (see below), whose sum is σ = 4776231657600. Its totient is φ = 666835367616.

The previous prime is 2102001099971. The next prime is 2102001100009. The reversal of 2102001100002 is 2000011002012.

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 (2102001100009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12674643 + ... + 12839414.

It is an arithmetic number, because the mean of its divisors is an integer number (99504826200).

Almost surely, 2^{2102001100002} is an apocalyptic number.

2102001100002 is an abundant number, since it is smaller than the sum of its proper divisors (2674230557598).

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

2102001100002 is a wasteful number, since it uses less digits than its factorization.

2102001100002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25514287 (or 25514284 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 2102001100002 its reverse (2000011002012), we get a palindrome (4102012102014).

The spelling of 2102001100002 in words is "two trillion, one hundred two billion, one million, one hundred thousand, two".