22271071 has 4 divisors (see below), whose sum is σ = 23581152. Its totient is φ = 20960992.

The previous prime is 22271027. The next prime is 22271083. The reversal of 22271071 is 17017222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17017222 = 2 ⋅8508611.

It is a cyclic number.

It is not a de Polignac number, because 22271071 - 2⁷ = 22270943 is a prime.

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 Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22272071) 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, 655015 + ... + 655048.

It is an arithmetic number, because the mean of its divisors is an integer number (5895288).

Almost surely, 2^22271071 is an apocalyptic number.

22271071 is a deficient number, since it is larger than the sum of its proper divisors (1310081).

22271071 is a wasteful number, since it uses less digits than its factorization.

22271071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310080.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 22271071 is about 4719.2235590190. The cubic root of 22271071 is about 281.3500742804.

Adding to 22271071 its reverse (17017222), we get a palindrome (39288293).

The spelling of 22271071 in words is "twenty-two million, two hundred seventy-one thousand, seventy-one".