22209071 has 2 divisors, whose sum is σ = 22209072. Its totient is φ = 22209070.

The previous prime is 22209059. The next prime is 22209079. The reversal of 22209071 is 17090222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22209071 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22209079) 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 as a sum of consecutive naturals, namely, 11104535 + 11104536.

It is an arithmetic number, because the mean of its divisors is an integer number (11104536).

Almost surely, 2^22209071 is an apocalyptic number.

22209071 is a deficient number, since it is larger than the sum of its proper divisors (1).

22209071 is an equidigital number, since it uses as much as digits as its factorization.

22209071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 22209071 is about 4712.6501037102. The cubic root of 22209071 is about 281.0887499709.

Adding to 22209071 its reverse (17090222), we get a palindrome (39299293).

The spelling of 22209071 in words is "twenty-two million, two hundred nine thousand, seventy-one".