22118198 has 4 divisors (see below), whose sum is σ = 33177300. Its totient is φ = 11059098.

The previous prime is 22118179. The next prime is 22118227. The reversal of 22118198 is 89181122.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5529548 + ... + 5529551.

It is an arithmetic number, because the mean of its divisors is an integer number (8294325).

Almost surely, 2^22118198 is an apocalyptic number.

22118198 is a deficient number, since it is larger than the sum of its proper divisors (11059102).

22118198 is a wasteful number, since it uses less digits than its factorization.

22118198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11059101.

The product of its digits is 2304, while the sum is 32.

The square root of 22118198 is about 4702.9988305336. The cubic root of 22118198 is about 280.7048483352.

The spelling of 22118198 in words is "twenty-two million, one hundred eighteen thousand, one hundred ninety-eight".