221117222198 has 8 divisors (see below), whose sum is σ = 331726053792. Its totient is φ = 110541870936.

The previous prime is 221117222167. The next prime is 221117222213. The reversal of 221117222198 is 891222711122.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8353565 + ... + 8379992.

It is an arithmetic number, because the mean of its divisors is an integer number (41465756724).

Almost surely, 2^221117222198 is an apocalyptic number.

221117222198 is a deficient number, since it is larger than the sum of its proper divisors (110608831594).

221117222198 is a wasteful number, since it uses less digits than its factorization.

221117222198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16740166.

The product of its digits is 16128, while the sum is 38.

The spelling of 221117222198 in words is "two hundred twenty-one billion, one hundred seventeen million, two hundred twenty-two thousand, one hundred ninety-eight".