21014327 has 2 divisors, whose sum is σ = 21014328. Its totient is φ = 21014326.

The previous prime is 21014303. The next prime is 21014333. The reversal of 21014327 is 72341012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21014327 - 2¹⁰ = 21013303 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 21014299 and 21014308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21014347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10507163 + 10507164.

It is an arithmetic number, because the mean of its divisors is an integer number (10507164).

Almost surely, 2^21014327 is an apocalyptic number.

21014327 is a deficient number, since it is larger than the sum of its proper divisors (1).

21014327 is an equidigital number, since it uses as much as digits as its factorization.

21014327 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 21014327 is about 4584.1386322842. The cubic root of 21014327 is about 275.9551448145.

Adding to 21014327 its reverse (72341012), we get a palindrome (93355339).

The spelling of 21014327 in words is "twenty-one million, fourteen thousand, three hundred twenty-seven".