998111112 has 32 divisors (see below), whose sum is σ = 2562720000. Its totient is φ = 323711424.

The previous prime is 998111111. The next prime is 998111119. The reversal of 998111112 is 211111899.

It is not an unprimeable number, because it can be changed into a prime (998111111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 561112 + ... + 562887.

It is an arithmetic number, because the mean of its divisors is an integer number (80085000).

Almost surely, 2^998111112 is an apocalyptic number.

It is an amenable number.

998111112 is an abundant number, since it is smaller than the sum of its proper divisors (1564608888).

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

998111112 is a wasteful number, since it uses less digits than its factorization.

998111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124045 (or 1124041 counting only the distinct ones).

The product of its digits is 1296, while the sum is 33.

The square root of 998111112 is about 31592.8965433687. The cubic root of 998111112 is about 999.3699738170.

The spelling of 998111112 in words is "nine hundred ninety-eight million, one hundred eleven thousand, one hundred twelve".