22066 has 16 divisors (see below), whose sum is σ = 38880. Its totient is φ = 9280.

The previous prime is 22063. The next prime is 22067. The reversal of 22066 is 66022.

22066 is a modest number, since divided by 66 gives 22 as remainder.

It is not an unprimeable number, because it can be changed into a prime (22063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345 + ... + 403.

It is an arithmetic number, because the mean of its divisors is an integer number (2430).

2²²⁰⁶⁶ is an apocalyptic number.

22066 is a deficient number, since it is larger than the sum of its proper divisors (16814).

22066 is a wasteful number, since it uses less digits than its factorization.

22066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 22066 is about 148.5462890819. The cubic root of 22066 is about 28.0483857261.

Adding to 22066 its reverse (66022), we get a palindrome (88088).

Subtracting 22066 from its reverse (66022), we obtain a triangular number (43956 = T₂₉₆).

The spelling of 22066 in words is "twenty-two thousand, sixty-six".