22122166 has 8 divisors (see below), whose sum is σ = 36199944. Its totient is φ = 10055520.

The previous prime is 22122103. The next prime is 22122169. The reversal of 22122166 is 66122122.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 1005553 = 22122166 / (2 + 2 + 1 + 2 + 2 + 1 + 6 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122169) 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 3 ways as a sum of consecutive naturals, for example, 502755 + ... + 502798.

It is an arithmetic number, because the mean of its divisors is an integer number (4524993).

Almost surely, 2^22122166 is an apocalyptic number.

22122166 is a deficient number, since it is larger than the sum of its proper divisors (14077778).

22122166 is a wasteful number, since it uses less digits than its factorization.

22122166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005566.

The product of its digits is 576, while the sum is 22.

The square root of 22122166 is about 4703.4206701081. The cubic root of 22122166 is about 280.7216334614.

Adding to 22122166 its reverse (66122122), we get a palindrome (88244288).

The spelling of 22122166 in words is "twenty-two million, one hundred twenty-two thousand, one hundred sixty-six".