2212222198 has 4 divisors (see below), whose sum is σ = 3318333300. Its totient is φ = 1106111098.

The previous prime is 2212222153. The next prime is 2212222213. The reversal of 2212222198 is 8912222122.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 553055548 + ... + 553055551.

It is an arithmetic number, because the mean of its divisors is an integer number (829583325).

Almost surely, 2^2212222198 is an apocalyptic number.

2212222198 is a deficient number, since it is larger than the sum of its proper divisors (1106111102).

2212222198 is a wasteful number, since it uses less digits than its factorization.

2212222198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106111101.

The product of its digits is 4608, while the sum is 31.

The square root of 2212222198 is about 47034.2662109233. The cubic root of 2212222198 is about 1302.9954983002.

The spelling of 2212222198 in words is "two billion, two hundred twelve million, two hundred twenty-two thousand, one hundred ninety-eight".