22066250321 has 4 divisors (see below), whose sum is σ = 22160955492. Its totient is φ = 21971545152.

The previous prime is 22066250287. The next prime is 22066250351. The reversal of 22066250321 is 12305266022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4825247296 + 17241003025 = 69464^2 + 131305^2 .

It is a cyclic number.

It is not a de Polignac number, because 22066250321 - 2¹⁸ = 22065988177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22066250351) 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 in 3 ways as a sum of consecutive naturals, for example, 47352236 + ... + 47352701.

It is an arithmetic number, because the mean of its divisors is an integer number (5540238873).

Almost surely, 2^22066250321 is an apocalyptic number.

It is an amenable number.

22066250321 is a deficient number, since it is larger than the sum of its proper divisors (94705171).

22066250321 is an equidigital number, since it uses as much as digits as its factorization.

22066250321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94705170.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 22066250321 in words is "twenty-two billion, sixty-six million, two hundred fifty thousand, three hundred twenty-one".