821112398 has 16 divisors (see below), whose sum is σ = 1311066000. Its totient is φ = 384576192.

The previous prime is 821112361. The next prime is 821112421. The reversal of 821112398 is 893211128.

821112398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118013 + ... + 124776.

It is an arithmetic number, because the mean of its divisors is an integer number (81941625).

Almost surely, 2^821112398 is an apocalyptic number.

821112398 is a deficient number, since it is larger than the sum of its proper divisors (489953602).

821112398 is a wasteful number, since it uses less digits than its factorization.

821112398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242899.

The product of its digits is 6912, while the sum is 35.

The square root of 821112398 is about 28655.0588552877. The cubic root of 821112398 is about 936.4132204919.

The spelling of 821112398 in words is "eight hundred twenty-one million, one hundred twelve thousand, three hundred ninety-eight".