22197197 has 8 divisors (see below), whose sum is σ = 24326400. Its totient is φ = 20086560.

The previous prime is 22197193. The next prime is 22197233. The reversal of 22197197 is 79179122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22197197 - 2² = 22197193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22197197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22197193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2072 + ... + 6977.

It is an arithmetic number, because the mean of its divisors is an integer number (3040800).

Almost surely, 2^22197197 is an apocalyptic number.

It is an amenable number.

22197197 is a deficient number, since it is larger than the sum of its proper divisors (2129203).

22197197 is a wasteful number, since it uses less digits than its factorization.

22197197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9283.

The product of its digits is 15876, while the sum is 38.

The square root of 22197197 is about 4711.3901345569. The cubic root of 22197197 is about 281.0386466773.

It can be divided in two parts, 22 and 197197, that multiplied together give a palindrome (4338334).

The spelling of 22197197 in words is "twenty-two million, one hundred ninety-seven thousand, one hundred ninety-seven".