199998222 has 8 divisors (see below), whose sum is σ = 399996456. Its totient is φ = 66666072.

The previous prime is 199998221. The next prime is 199998241. The reversal of 199998222 is 222899991.

It is a sphenic number, since it is the product of 3 distinct primes.

199998222 is an admirable number.

It is a super-2 number, since 2×199998222² = 79998577606322568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199998221) 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, 16666513 + ... + 16666524.

It is an arithmetic number, because the mean of its divisors is an integer number (49999557).

Almost surely, 2^199998222 is an apocalyptic number.

199998222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

199998222 is a wasteful number, since it uses less digits than its factorization.

199998222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33333042.

The product of its digits is 419904, while the sum is 51.

The square root of 199998222 is about 14142.0727617984. The cubic root of 199998222 is about 584.8018146696.

The spelling of 199998222 in words is "one hundred ninety-nine million, nine hundred ninety-eight thousand, two hundred twenty-two".