990099010012 has 192 divisors, whose sum is σ = 2205638830080. Its totient is φ = 378909425664.

The previous prime is 990099009967. The next prime is 990099010037. The reversal of 990099010012 is 210010990099.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1307924338 + ... + 1307925094.

It is an arithmetic number, because the mean of its divisors is an integer number (11487702240).

Almost surely, 2^990099010012 is an apocalyptic number.

990099010012 is a gapful number since it is divisible by the number (92) 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 990099010012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1102819415040).

990099010012 is an abundant number, since it is smaller than the sum of its proper divisors (1215539820068).

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

990099010012 is a wasteful number, since it uses less digits than its factorization.

990099010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620 (or 1618 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 40.

The spelling of 990099010012 in words is "nine hundred ninety billion, ninety-nine million, ten thousand, twelve".