22122238 has 4 divisors (see below), whose sum is σ = 33183360. Its totient is φ = 11061118.

The previous prime is 22122223. The next prime is 22122241. The reversal of 22122238 is 83222122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83222122 = 2 ⋅41611061.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 5530558 + ... + 5530561.

It is an arithmetic number, because the mean of its divisors is an integer number (8295840).

Almost surely, 2^22122238 is an apocalyptic number.

22122238 is a deficient number, since it is larger than the sum of its proper divisors (11061122).

22122238 is a wasteful number, since it uses less digits than its factorization.

22122238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11061121.

The product of its digits is 768, while the sum is 22.

The square root of 22122238 is about 4703.4283241057. The cubic root of 22122238 is about 280.7219380117.

The spelling of 22122238 in words is "twenty-two million, one hundred twenty-two thousand, two hundred thirty-eight".