22006227 has 4 divisors (see below), whose sum is σ = 29341640. Its totient is φ = 14670816.

The previous prime is 22006223. The next prime is 22006241. The reversal of 22006227 is 72260022.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 22006227 - 2² = 22006223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22006223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3667702 + ... + 3667707.

It is an arithmetic number, because the mean of its divisors is an integer number (7335410).

Almost surely, 2^22006227 is an apocalyptic number.

22006227 is a deficient number, since it is larger than the sum of its proper divisors (7335413).

22006227 is an equidigital number, since it uses as much as digits as its factorization.

22006227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7335412.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 22006227 is about 4691.0795132890. The cubic root of 22006227 is about 280.2303673882.

Adding to 22006227 its reverse (72260022), we get a palindrome (94266249).

The spelling of 22006227 in words is "twenty-two million, six thousand, two hundred twenty-seven".