22197943 has 2 divisors, whose sum is σ = 22197944. Its totient is φ = 22197942.

The previous prime is 22197941. The next prime is 22197979. The reversal of 22197943 is 34979122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22197943 - 2¹ = 22197941 is a prime.

Together with 22197941, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22197941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11098971 + 11098972.

It is an arithmetic number, because the mean of its divisors is an integer number (11098972).

Almost surely, 2^22197943 is an apocalyptic number.

22197943 is a deficient number, since it is larger than the sum of its proper divisors (1).

22197943 is an equidigital number, since it uses as much as digits as its factorization.

22197943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 22197943 is about 4711.4693037311. The cubic root of 22197943 is about 281.0417950100.

The spelling of 22197943 in words is "twenty-two million, one hundred ninety-seven thousand, nine hundred forty-three".