99999200000 has 324 divisors, whose sum is σ = 290341198224. Its totient is φ = 34272000000.

The previous prime is 99999199999. The next prime is 99999200003. The reversal of 99999200000 is 299999.

It is a happy number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (99999200003) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 39198725 + ... + 39201275.

Almost surely, 2^99999200000 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 99999200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145170599112).

99999200000 is an abundant number, since it is smaller than the sum of its proper divisors (190341998224).

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

99999200000 is an frugal number, since it uses more digits than its factorization.

99999200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606 (or 2565 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 47.

Adding to 99999200000 its reverse (299999), we get a palindrome (99999499999).

The spelling of 99999200000 in words is "ninety-nine billion, nine hundred ninety-nine million, two hundred thousand".