999822222 has 48 divisors (see below), whose sum is σ = 2477509632. Its totient is φ = 285460560.

The previous prime is 999822217. The next prime is 999822223. The reversal of 999822222 is 222228999.

999822222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

999822222 is a modest number, since divided by 22222 gives 9998 as remainder.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999822223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 340123 + ... + 343049.

It is an arithmetic number, because the mean of its divisors is an integer number (51614784).

Almost surely, 2^999822222 is an apocalyptic number.

999822222 is an abundant number, since it is smaller than the sum of its proper divisors (1477687410).

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

999822222 is a wasteful number, since it uses less digits than its factorization.

999822222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5653 (or 5650 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 999822222 is about 31619.9655597535. The cubic root of 999822222 is about 999.9407371547.

It can be divided in two parts, 9998222 and 22, that added together give a square (9998244 = 3162²).

The spelling of 999822222 in words is "nine hundred ninety-nine million, eight hundred twenty-two thousand, two hundred twenty-two".