999201112 has 64 divisors (see below), whose sum is σ = 2441517120. Its totient is φ = 372031488.

The previous prime is 999201107. The next prime is 999201113. The reversal of 999201112 is 211102999.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999201113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27993 + ... + 52744.

It is an arithmetic number, because the mean of its divisors is an integer number (38148705).

Almost surely, 2^999201112 is an apocalyptic number.

It is an amenable number.

999201112 is an abundant number, since it is smaller than the sum of its proper divisors (1442316008).

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

999201112 is a wasteful number, since it uses less digits than its factorization.

999201112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80780 (or 80776 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 34.

The square root of 999201112 is about 31610.1425495046. The cubic root of 999201112 is about 999.7336330550.

The spelling of 999201112 in words is "nine hundred ninety-nine million, two hundred one thousand, one hundred twelve".