21414343213 has 2 divisors, whose sum is σ = 21414343214. Its totient is φ = 21414343212.

The previous prime is 21414343207. The next prime is 21414343219. The reversal of 21414343213 is 31234341412.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (21414343207) and next prime (21414343219).

It can be written as a sum of positive squares in only one way, i.e., 12950895204 + 8463448009 = 113802^2 + 91997^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21414343213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21414343219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10707171606 + 10707171607.

It is an arithmetic number, because the mean of its divisors is an integer number (10707171607).

Almost surely, 2^21414343213 is an apocalyptic number.

It is an amenable number.

21414343213 is a deficient number, since it is larger than the sum of its proper divisors (1).

21414343213 is an equidigital number, since it uses as much as digits as its factorization.

21414343213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 28.

Adding to 21414343213 its reverse (31234341412), we get a palindrome (52648684625).

The spelling of 21414343213 in words is "twenty-one billion, four hundred fourteen million, three hundred forty-three thousand, two hundred thirteen".