222209999 has 8 divisors (see below), whose sum is σ = 244812240. Its totient is φ = 200008000.

The previous prime is 222209983. The next prime is 222210013. The reversal of 222209999 is 999902222.

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

It is a cyclic number.

It is not a de Polignac number, because 222209999 - 2⁴ = 222209983 is a prime.

It is a Duffinian number.

222209999 is a modest number, since divided by 9999 gives 2222 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222209909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98894 + ... + 101115.

It is an arithmetic number, because the mean of its divisors is an integer number (30601530).

Almost surely, 2^222209999 is an apocalyptic number.

222209999 is a deficient number, since it is larger than the sum of its proper divisors (22602241).

222209999 is a wasteful number, since it uses less digits than its factorization.

222209999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200121.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 222209999 is about 14906.7098650239. The cubic root of 222209999 is about 605.6957585394.

Adding to 222209999 its reverse (999902222), we get a palindrome (1222112221).

The spelling of 222209999 in words is "two hundred twenty-two million, two hundred nine thousand, nine hundred ninety-nine".