22261061 has 2 divisors, whose sum is σ = 22261062. Its totient is φ = 22261060.

The previous prime is 22261003. The next prime is 22261093. The reversal of 22261061 is 16016222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11600836 + 10660225 = 3406^2 + 3265^2 .

It is a cyclic number.

It is not a de Polignac number, because 22261061 - 2¹⁰ = 22260037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22261361) 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, 11130530 + 11130531.

It is an arithmetic number, because the mean of its divisors is an integer number (11130531).

Almost surely, 2^22261061 is an apocalyptic number.

It is an amenable number.

22261061 is a deficient number, since it is larger than the sum of its proper divisors (1).

22261061 is an equidigital number, since it uses as much as digits as its factorization.

22261061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 22261061 is about 4718.1628840047. The cubic root of 22261061 is about 281.3079159083.

Adding to 22261061 its reverse (16016222), we get a palindrome (38277283).

The spelling of 22261061 in words is "twenty-two million, two hundred sixty-one thousand, sixty-one".