22197015 has 24 divisors (see below), whose sum is σ = 38856480. Its totient is φ = 11721024.

The previous prime is 22197013. The next prime is 22197059. The reversal of 22197015 is 51079122.

It is not a de Polignac number, because 22197015 - 2¹ = 22197013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22197015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22197013) 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 23 ways as a sum of consecutive naturals, for example, 2241 + ... + 7029.

It is an arithmetic number, because the mean of its divisors is an integer number (1619020).

Almost surely, 2^22197015 is an apocalyptic number.

22197015 is a deficient number, since it is larger than the sum of its proper divisors (16659465).

22197015 is a wasteful number, since it uses less digits than its factorization.

22197015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4903 (or 4900 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 22197015 is about 4711.3708196235. The cubic root of 22197015 is about 281.0378785747.

The spelling of 22197015 in words is "twenty-two million, one hundred ninety-seven thousand, fifteen".