22197412 has 24 divisors (see below), whose sum is σ = 40856760. Its totient is φ = 10536960.

The previous prime is 22197403. The next prime is 22197421. The reversal of 22197412 is 21479122.

It is an interprime number because it is at equal distance from previous prime (22197403) and next prime (22197421).

It can be written as a sum of positive squares in 4 ways, for example, as 4691556 + 17505856 = 2166^2 + 4184^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5508 + ... + 8644.

It is an arithmetic number, because the mean of its divisors is an integer number (1702365).

Almost surely, 2^22197412 is an apocalyptic number.

It is an amenable number.

22197412 is a deficient number, since it is larger than the sum of its proper divisors (18659348).

22197412 is a wasteful number, since it uses less digits than its factorization.

22197412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3231 (or 3229 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 22197412 is about 4711.4129515465. The cubic root of 22197412 is about 281.0395540459.

The spelling of 22197412 in words is "twenty-two million, one hundred ninety-seven thousand, four hundred twelve".