22066147 has 2 divisors, whose sum is σ = 22066148. Its totient is φ = 22066146.

The previous prime is 22066139. The next prime is 22066151. The reversal of 22066147 is 74166022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22066147 - 2³ = 22066139 is a prime.

It is not a weakly prime, because it can be changed into another prime (22066127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11033073 + 11033074.

It is an arithmetic number, because the mean of its divisors is an integer number (11033074).

Almost surely, 2^22066147 is an apocalyptic number.

22066147 is a deficient number, since it is larger than the sum of its proper divisors (1).

22066147 is an equidigital number, since it uses as much as digits as its factorization.

22066147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 22066147 is about 4697.4617614197. The cubic root of 22066147 is about 280.4844801049.

The spelling of 22066147 in words is "twenty-two million, sixty-six thousand, one hundred forty-seven".