2102102001200 has 120 divisors (see below), whose sum is σ = 5187877084080. Its totient is φ = 817944652800.

The previous prime is 2102102001061. The next prime is 2102102001203. The reversal of 2102102001200 is 21002012012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2102102001203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88950986 + ... + 88974614.

It is an arithmetic number, because the mean of its divisors is an integer number (43232309034).

Almost surely, 2^{2102102001200} is an apocalyptic number.

2102102001200 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 2102102001200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2593938542040).

2102102001200 is an abundant number, since it is smaller than the sum of its proper divisors (3085775082880).

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

2102102001200 is a wasteful number, since it uses less digits than its factorization.

2102102001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29695 (or 29684 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2102102001200 its reverse (21002012012), we get a palindrome (2123104013212).

The spelling of 2102102001200 in words is "two trillion, one hundred two billion, one hundred two million, one thousand, two hundred".