22182197 has 2 divisors, whose sum is σ = 22182198. Its totient is φ = 22182196.

The previous prime is 22182191. The next prime is 22182247. The reversal of 22182197 is 79128122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19704721 + 2477476 = 4439^2 + 1574^2 .

It is a cyclic number.

It is not a de Polignac number, because 22182197 - 2⁶ = 22182133 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 (22182191) 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, 11091098 + 11091099.

It is an arithmetic number, because the mean of its divisors is an integer number (11091099).

Almost surely, 2^22182197 is an apocalyptic number.

It is an amenable number.

22182197 is a deficient number, since it is larger than the sum of its proper divisors (1).

22182197 is an equidigital number, since it uses as much as digits as its factorization.

22182197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 32.

The square root of 22182197 is about 4709.7979786823. The cubic root of 22182197 is about 280.9753274268.

The spelling of 22182197 in words is "twenty-two million, one hundred eighty-two thousand, one hundred ninety-seven".