22242397 has 2 divisors, whose sum is σ = 22242398. Its totient is φ = 22242396.

The previous prime is 22242343. The next prime is 22242401. The reversal of 22242397 is 79324222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19263321 + 2979076 = 4389^2 + 1726^2 .

It is a cyclic number.

It is not a de Polignac number, because 22242397 - 2¹¹ = 22240349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22242317) 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 as a sum of consecutive naturals, namely, 11121198 + 11121199.

It is an arithmetic number, because the mean of its divisors is an integer number (11121199).

Almost surely, 2^22242397 is an apocalyptic number.

It is an amenable number.

22242397 is a deficient number, since it is larger than the sum of its proper divisors (1).

22242397 is an equidigital number, since it uses as much as digits as its factorization.

22242397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 31.

The square root of 22242397 is about 4716.1845807814. The cubic root of 22242397 is about 281.2292763660.

The spelling of 22242397 in words is "twenty-two million, two hundred forty-two thousand, three hundred ninety-seven".