22118773 has 2 divisors, whose sum is σ = 22118774. Its totient is φ = 22118772.

The previous prime is 22118731. The next prime is 22118791. The reversal of 22118773 is 37781122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13010449 + 9108324 = 3607^2 + 3018^2 .

It is a cyclic number.

It is not a de Polignac number, because 22118773 - 2¹³ = 22110581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22118713) 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, 11059386 + 11059387.

It is an arithmetic number, because the mean of its divisors is an integer number (11059387).

Almost surely, 2^22118773 is an apocalyptic number.

It is an amenable number.

22118773 is a deficient number, since it is larger than the sum of its proper divisors (1).

22118773 is an equidigital number, since it uses as much as digits as its factorization.

22118773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4704, while the sum is 31.

The square root of 22118773 is about 4703.0599613443. The cubic root of 22118773 is about 280.7072807800.

Adding to 22118773 its reverse (37781122), we get a palindrome (59899895).

The spelling of 22118773 in words is "twenty-two million, one hundred eighteen thousand, seven hundred seventy-three".