99998521112 has 16 divisors (see below), whose sum is σ = 214282545360. Its totient is φ = 42856509024.

The previous prime is 99998521111. The next prime is 99998521141. The reversal of 99998521112 is 21112589999.

It is a Harshad number since it is a multiple of its sum of digits (56), and also a Moran number because the ratio is a prime number: 1785687877 = 99998521112 / (9 + 9 + 9 + 9 + 8 + 5 + 2 + 1 + 1 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99998521111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 892843883 + ... + 892843994.

It is an arithmetic number, because the mean of its divisors is an integer number (13392659085).

Almost surely, 2^99998521112 is an apocalyptic number.

It is an amenable number.

99998521112 is an abundant number, since it is smaller than the sum of its proper divisors (114284024248).

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

99998521112 is a wasteful number, since it uses less digits than its factorization.

99998521112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785687890 (or 1785687886 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 56.

The spelling of 99998521112 in words is "ninety-nine billion, nine hundred ninety-eight million, five hundred twenty-one thousand, one hundred twelve".