22001118 has 8 divisors (see below), whose sum is σ = 44002248. Its totient is φ = 7333704.

The previous prime is 22001113. The next prime is 22001129. The reversal of 22001118 is 81110022.

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

22001118 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 22001097 and 22001106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1833421 + ... + 1833432.

It is an arithmetic number, because the mean of its divisors is an integer number (5500281).

Almost surely, 2^22001118 is an apocalyptic number.

22001118 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.

22001118 is a wasteful number, since it uses less digits than its factorization.

22001118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3666858.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 22001118 is about 4690.5349375098. The cubic root of 22001118 is about 280.2086794699.

The spelling of 22001118 in words is "twenty-two million, one thousand, one hundred eighteen".