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22097 = 191163

22097 has 4 divisors (see below), whose sum is σ = 23280. Its totient is φ = 20916.

The previous prime is 22093. The next prime is 22109. The reversal of 22097 is 79022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79022 = 239511.

It is a cyclic number.

It is not a de Polignac number, because 22097 - 22 = 22093 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (22091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563 + ... + 600.

It is an arithmetic number, because the mean of its divisors is an integer number (5820).

222097 is an apocalyptic number.

It is an amenable number.

22097 is a deficient number, since it is larger than the sum of its proper divisors (1183).

22097 is a wasteful number, since it uses less digits than its factorization.

22097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 22097 is about 148.6505970388. The cubic root of 22097 is about 28.0615144172.

The spelling of 22097 in words is "twenty-two thousand, ninety-seven".

Divisors: 1 19 1163 22097