99612001200 has 120 divisors (see below), whose sum is σ = 319313022976. Its totient is φ = 26544672000.

The previous prime is 99612001189. The next prime is 99612001231. The reversal of 99612001200 is 210021699.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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, 1736985 + ... + 1793415.

Almost surely, 2^99612001200 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 99612001200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159656511488).

99612001200 is an abundant number, since it is smaller than the sum of its proper divisors (219701021776).

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

99612001200 is a wasteful number, since it uses less digits than its factorization.

99612001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57923 (or 57912 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

Adding to 99612001200 its reverse (210021699), we get a palindrome (99822022899).

The spelling of 99612001200 in words is "ninety-nine billion, six hundred twelve million, one thousand, two hundred".