22149197 has 8 divisors (see below), whose sum is σ = 25406976. Its totient is φ = 18914832.

The previous prime is 22149187. The next prime is 22149203. The reversal of 22149197 is 79194122.

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 22149197 - 2¹⁰ = 22148173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22149137) 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 in 7 ways as a sum of consecutive naturals, for example, 3773 + ... + 7650.

It is an arithmetic number, because the mean of its divisors is an integer number (3175872).

Almost surely, 2^22149197 is an apocalyptic number.

It is an amenable number.

22149197 is a deficient number, since it is larger than the sum of its proper divisors (3257779).

22149197 is a wasteful number, since it uses less digits than its factorization.

22149197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11707.

The product of its digits is 9072, while the sum is 35.

The square root of 22149197 is about 4706.2933397739. The cubic root of 22149197 is about 280.8359245291.

It can be divided in two parts, 2214 and 9197, that added together give a palindrome (11411).

The spelling of 22149197 in words is "twenty-two million, one hundred forty-nine thousand, one hundred ninety-seven".