21114673 has 2 divisors, whose sum is σ = 21114674. Its totient is φ = 21114672.

The previous prime is 21114671. The next prime is 21114683. The reversal of 21114673 is 37641112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20493729 + 620944 = 4527^2 + 788^2 .

It is a cyclic number.

It is not a de Polignac number, because 21114673 - 2¹ = 21114671 is a prime.

It is a super-3 number, since 3×21114673³ (a number of 23 digits) contains 333 as substring.

Together with 21114671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21114671) 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, 10557336 + 10557337.

It is an arithmetic number, because the mean of its divisors is an integer number (10557337).

Almost surely, 2^21114673 is an apocalyptic number.

It is an amenable number.

21114673 is a deficient number, since it is larger than the sum of its proper divisors (1).

21114673 is an equidigital number, since it uses as much as digits as its factorization.

21114673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 25.

The square root of 21114673 is about 4595.0705108845. The cubic root of 21114673 is about 276.3936874581.

Adding to 21114673 its reverse (37641112), we get a palindrome (58755785).

It can be divided in two parts, 211 and 14673, that added together give a square (14884 = 122²).

The spelling of 21114673 in words is "twenty-one million, one hundred fourteen thousand, six hundred seventy-three".