990199011102 has 64 divisors (see below), whose sum is σ = 2311919124480. Its totient is φ = 276840468576.

The previous prime is 990199011083. The next prime is 990199011187. The reversal of 990199011102 is 201110991099.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10650823 + ... + 10743389.

It is an arithmetic number, because the mean of its divisors is an integer number (36123736320).

Almost surely, 2^990199011102 is an apocalyptic number.

990199011102 is an abundant number, since it is smaller than the sum of its proper divisors (1321720113378).

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

990199011102 is a wasteful number, since it uses less digits than its factorization.

990199011102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98045.

The product of its (nonzero) digits is 13122, while the sum is 42.

The spelling of 990199011102 in words is "nine hundred ninety billion, one hundred ninety-nine million, eleven thousand, one hundred two".