22242401 has 2 divisors, whose sum is σ = 22242402. Its totient is φ = 22242400.

The previous prime is 22242397. The next prime is 22242419. The reversal of 22242401 is 10424222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12780625 + 9461776 = 3575^2 + 3076^2 .

It is a cyclic number.

It is not a de Polignac number, because 22242401 - 2² = 22242397 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22242401.

It is not a weakly prime, because it can be changed into another prime (22242461) 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, 11121200 + 11121201.

It is an arithmetic number, because the mean of its divisors is an integer number (11121201).

Almost surely, 2^22242401 is an apocalyptic number.

It is an amenable number.

22242401 is a deficient number, since it is larger than the sum of its proper divisors (1).

22242401 is an equidigital number, since it uses as much as digits as its factorization.

22242401 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 22242401 is about 4716.1850048530. The cubic root of 22242401 is about 281.2292932245.

Adding to 22242401 its reverse (10424222), we get a palindrome (32666623).

The spelling of 22242401 in words is "twenty-two million, two hundred forty-two thousand, four hundred one".