22166671 has 2 divisors, whose sum is σ = 22166672. Its totient is φ = 22166670.

The previous prime is 22166659. The next prime is 22166699. The reversal of 22166671 is 17666122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22166671 - 2⁹ = 22166159 is a prime.

It is a super-2 number, since 2×22166671² = 982722606444482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22166611) 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, 11083335 + 11083336.

It is an arithmetic number, because the mean of its divisors is an integer number (11083336).

Almost surely, 2^22166671 is an apocalyptic number.

22166671 is a deficient number, since it is larger than the sum of its proper divisors (1).

22166671 is an equidigital number, since it uses as much as digits as its factorization.

22166671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 31.

The square root of 22166671 is about 4708.1494241368. The cubic root of 22166671 is about 280.9097577100.

The spelling of 22166671 in words is "twenty-two million, one hundred sixty-six thousand, six hundred seventy-one".