21885067 has 2 divisors, whose sum is σ = 21885068. Its totient is φ = 21885066.

The previous prime is 21885041. The next prime is 21885089. The reversal of 21885067 is 76058812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21885067 - 2¹¹ = 21883019 is a prime.

It is not a weakly prime, because it can be changed into another prime (21882067) 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, 10942533 + 10942534.

It is an arithmetic number, because the mean of its divisors is an integer number (10942534).

Almost surely, 2^21885067 is an apocalyptic number.

21885067 is a deficient number, since it is larger than the sum of its proper divisors (1).

21885067 is an equidigital number, since it uses as much as digits as its factorization.

21885067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 21885067 is about 4678.1478172456. The cubic root of 21885067 is about 279.7151311944.

The spelling of 21885067 in words is "twenty-one million, eight hundred eighty-five thousand, sixty-seven".