22424636523221 has 2 divisors, whose sum is σ = 22424636523222. Its totient is φ = 22424636523220.

The previous prime is 22424636523193. The next prime is 22424636523271. The reversal of 22424636523221 is 12232563642422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21439353970225 + 985282552996 = 4630265^2 + 992614^2 .

It is a cyclic number.

It is not a de Polignac number, because 22424636523221 - 2¹⁴ = 22424636506837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22424636523271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11212318261610 + 11212318261611.

It is an arithmetic number, because the mean of its divisors is an integer number (11212318261611).

Almost surely, 2^{22424636523221} is an apocalyptic number.

It is an amenable number.

22424636523221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22424636523221 is an equidigital number, since it uses as much as digits as its factorization.

22424636523221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1658880, while the sum is 44.

The spelling of 22424636523221 in words is "twenty-two trillion, four hundred twenty-four billion, six hundred thirty-six million, five hundred twenty-three thousand, two hundred twenty-one".