21412330213 has 2 divisors, whose sum is σ = 21412330214. Its totient is φ = 21412330212.

The previous prime is 21412330183. The next prime is 21412330241. The reversal of 21412330213 is 31203321412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20850782404 + 561547809 = 144398^2 + 23697^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21412330213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21412330253) 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, 10706165106 + 10706165107.

It is an arithmetic number, because the mean of its divisors is an integer number (10706165107).

Almost surely, 2^21412330213 is an apocalyptic number.

It is an amenable number.

21412330213 is a deficient number, since it is larger than the sum of its proper divisors (1).

21412330213 is an equidigital number, since it uses as much as digits as its factorization.

21412330213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21412330213 its reverse (31203321412), we get a palindrome (52615651625).

The spelling of 21412330213 in words is "twenty-one billion, four hundred twelve million, three hundred thirty thousand, two hundred thirteen".