22143271 has 2 divisors, whose sum is σ = 22143272. Its totient is φ = 22143270.

The previous prime is 22143263. The next prime is 22143281. The reversal of 22143271 is 17234122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22143271 - 2³ = 22143263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22143281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11071635 + 11071636.

It is an arithmetic number, because the mean of its divisors is an integer number (11071636).

Almost surely, 2^22143271 is an apocalyptic number.

22143271 is a deficient number, since it is larger than the sum of its proper divisors (1).

22143271 is an equidigital number, since it uses as much as digits as its factorization.

22143271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 22.

The square root of 22143271 is about 4705.6637151416. The cubic root of 22143271 is about 280.8108764858.

Adding to 22143271 its reverse (17234122), we get a palindrome (39377393).

The spelling of 22143271 in words is "twenty-two million, one hundred forty-three thousand, two hundred seventy-one".