22386945221 has 2 divisors, whose sum is σ = 22386945222. Its totient is φ = 22386945220.

The previous prime is 22386945199. The next prime is 22386945233. The reversal of 22386945221 is 12254968322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15217936321 + 7169008900 = 123361^2 + 84670^2 .

It is a cyclic number.

It is not a de Polignac number, because 22386945221 - 2²² = 22382750917 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 (22386945421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11193472610 + 11193472611.

It is an arithmetic number, because the mean of its divisors is an integer number (11193472611).

Almost surely, 2^22386945221 is an apocalyptic number.

It is an amenable number.

22386945221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22386945221 is an equidigital number, since it uses as much as digits as its factorization.

22386945221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 44.

The spelling of 22386945221 in words is "twenty-two billion, three hundred eighty-six million, nine hundred forty-five thousand, two hundred twenty-one".