21314179 has 2 divisors, whose sum is σ = 21314180. Its totient is φ = 21314178.

The previous prime is 21314177. The next prime is 21314191. The reversal of 21314179 is 97141312.

21314179 is nontrivially palindromic in base 12.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21314179 - 2¹ = 21314177 is a prime.

Together with 21314177, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21314177) 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, 10657089 + 10657090.

It is an arithmetic number, because the mean of its divisors is an integer number (10657090).

Almost surely, 2^21314179 is an apocalyptic number.

21314179 is a deficient number, since it is larger than the sum of its proper divisors (1).

21314179 is an equidigital number, since it uses as much as digits as its factorization.

21314179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 28.

The square root of 21314179 is about 4616.7281704688. The cubic root of 21314179 is about 277.2614794294.

The spelling of 21314179 in words is "twenty-one million, three hundred fourteen thousand, one hundred seventy-nine".