22122418 has 16 divisors (see below), whose sum is σ = 34496280. Its totient is φ = 10627456.

The previous prime is 22122413. The next prime is 22122421. The reversal of 22122418 is 81422122.

It can be written as a sum of positive squares in 4 ways, for example, as 9753129 + 12369289 = 3123^2 + 3517^2 .

It is not an unprimeable number, because it can be changed into a prime (22122413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12696 + ... + 14332.

Almost surely, 2^22122418 is an apocalyptic number.

22122418 is a deficient number, since it is larger than the sum of its proper divisors (12373862).

22122418 is a wasteful number, since it uses less digits than its factorization.

22122418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901.

The product of its digits is 512, while the sum is 22.

The square root of 22122418 is about 4703.4474590453. The cubic root of 22122418 is about 280.7226993845.

The spelling of 22122418 in words is "twenty-two million, one hundred twenty-two thousand, four hundred eighteen".