22118045 has 8 divisors (see below), whose sum is σ = 27259224. Its totient is φ = 17216064.

The previous prime is 22118029. The next prime is 22118053. The reversal of 22118045 is 54081122.

It can be written as a sum of positive squares in 4 ways, for example, as 4318084 + 17799961 = 2078^2 + 4219^2 .

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 22118045 - 2⁴ = 22118029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22118045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59594 + ... + 59963.

It is an arithmetic number, because the mean of its divisors is an integer number (3407403).

Almost surely, 2^22118045 is an apocalyptic number.

It is an amenable number.

22118045 is a deficient number, since it is larger than the sum of its proper divisors (5141179).

22118045 is a wasteful number, since it uses less digits than its factorization.

22118045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119599.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 22118045 is about 4702.9825642883. The cubic root of 22118045 is about 280.7042010862.

Adding to 22118045 its reverse (54081122), we get a palindrome (76199167).

The spelling of 22118045 in words is "twenty-two million, one hundred eighteen thousand, forty-five".