22424255255221 has 2 divisors, whose sum is σ = 22424255255222. Its totient is φ = 22424255255220.

The previous prime is 22424255255203. The next prime is 22424255255273. The reversal of 22424255255221 is 12255255242422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22369248588996 + 55006666225 = 4729614^2 + 234535^2 .

It is a cyclic number.

It is not a de Polignac number, because 22424255255221 - 2¹⁷ = 22424255124149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22424255255291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11212127627610 + 11212127627611.

It is an arithmetic number, because the mean of its divisors is an integer number (11212127627611).

Almost surely, 2^{22424255255221} is an apocalyptic number.

It is an amenable number.

22424255255221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22424255255221 is an equidigital number, since it uses as much as digits as its factorization.

22424255255221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1280000, while the sum is 43.

The spelling of 22424255255221 in words is "twenty-two trillion, four hundred twenty-four billion, two hundred fifty-five million, two hundred fifty-five thousand, two hundred twenty-one".