22066481 has 2 divisors, whose sum is σ = 22066482. Its totient is φ = 22066480.

The previous prime is 22066469. The next prime is 22066483. The reversal of 22066481 is 18466022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17986081 + 4080400 = 4241^2 + 2020^2 .

It is a cyclic number.

It is not a de Polignac number, because 22066481 - 2⁶ = 22066417 is a prime.

It is a super-2 number, since 2×22066481² = 973859167446722, which contains 22 as substring.

Together with 22066483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22066483) 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, 11033240 + 11033241.

It is an arithmetic number, because the mean of its divisors is an integer number (11033241).

Almost surely, 2^22066481 is an apocalyptic number.

It is an amenable number.

22066481 is a deficient number, since it is larger than the sum of its proper divisors (1).

22066481 is an equidigital number, since it uses as much as digits as its factorization.

22066481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 22066481 is about 4697.4973123994. The cubic root of 22066481 is about 280.4858952642.

The spelling of 22066481 in words is "twenty-two million, sixty-six thousand, four hundred eighty-one".