22420241 has 2 divisors, whose sum is σ = 22420242. Its totient is φ = 22420240.

The previous prime is 22420213. The next prime is 22420249. The reversal of 22420241 is 14202422.

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., 22420225 + 16 = 4735^2 + 4^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22420241 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22420249) 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, 11210120 + 11210121.

It is an arithmetic number, because the mean of its divisors is an integer number (11210121).

Almost surely, 2^22420241 is an apocalyptic number.

It is an amenable number.

22420241 is a deficient number, since it is larger than the sum of its proper divisors (1).

22420241 is an equidigital number, since it uses as much as digits as its factorization.

22420241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 22420241 is about 4735.0016895456. The cubic root of 22420241 is about 281.9768310861.

Adding to 22420241 its reverse (14202422), we get a palindrome (36622663).

The spelling of 22420241 in words is "twenty-two million, four hundred twenty thousand, two hundred forty-one".