21114089 has 2 divisors, whose sum is σ = 21114090. Its totient is φ = 21114088.

The previous prime is 21114083. The next prime is 21114097. The reversal of 21114089 is 98041112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21114025 + 64 = 4595^2 + 8^2 .

It is a cyclic number.

It is not a de Polignac number, because 21114089 - 2¹⁶ = 21048553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21114083) 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, 10557044 + 10557045.

It is an arithmetic number, because the mean of its divisors is an integer number (10557045).

Almost surely, 2^21114089 is an apocalyptic number.

It is an amenable number.

21114089 is a deficient number, since it is larger than the sum of its proper divisors (1).

21114089 is an equidigital number, since it uses as much as digits as its factorization.

21114089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 21114089 is about 4595.0069640861. The cubic root of 21114089 is about 276.3911392238.

The spelling of 21114089 in words is "twenty-one million, one hundred fourteen thousand, eighty-nine".