9999900100000 has 144 divisors (see below), whose sum is σ = 24648243411456. Its totient is φ = 3993346080000.

The previous prime is 9999900099971. The next prime is 9999900100007. The reversal of 9999900100000 is 10099999.

It is not an unprimeable number, because it can be changed into a prime (9999900100007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60617629 + ... + 60782371.

It is an arithmetic number, because the mean of its divisors is an integer number (171168357024).

Almost surely, 2^{9999900100000} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9999900100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12324121705728).

9999900100000 is an abundant number, since it is smaller than the sum of its proper divisors (14648343311456).

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

9999900100000 is an equidigital number, since it uses as much as digits as its factorization.

9999900100000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165385 (or 165357 counting only the distinct ones).

The product of its (nonzero) digits is 59049, while the sum is 46.

Adding to 9999900100000 its reverse (10099999), we get a palindrome (9999910199999).

The spelling of 9999900100000 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred million, one hundred thousand".