22109473 has 2 divisors, whose sum is σ = 22109474. Its totient is φ = 22109472.

The previous prime is 22109459. The next prime is 22109491. The reversal of 22109473 is 37490122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19820304 + 2289169 = 4452^2 + 1513^2 .

It is a cyclic number.

It is not a de Polignac number, because 22109473 - 2¹⁷ = 21978401 is a prime.

It is not a weakly prime, because it can be changed into another prime (22109443) by changing a digit.

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 as a sum of consecutive naturals, namely, 11054736 + 11054737.

It is an arithmetic number, because the mean of its divisors is an integer number (11054737).

Almost surely, 2^22109473 is an apocalyptic number.

It is an amenable number.

22109473 is a deficient number, since it is larger than the sum of its proper divisors (1).

22109473 is an equidigital number, since it uses as much as digits as its factorization.

22109473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 22109473 is about 4702.0711394023. The cubic root of 22109473 is about 280.6679334546.

Adding to 22109473 its reverse (37490122), we get a palindrome (59599595).

The spelling of 22109473 in words is "twenty-two million, one hundred nine thousand, four hundred seventy-three".