21344212327 has 2 divisors, whose sum is σ = 21344212328. Its totient is φ = 21344212326.

The previous prime is 21344212297. The next prime is 21344212361. The reversal of 21344212327 is 72321244312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21344212327 - 2⁷ = 21344212199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21344212387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10672106163 + 10672106164.

It is an arithmetic number, because the mean of its divisors is an integer number (10672106164).

Almost surely, 2^21344212327 is an apocalyptic number.

21344212327 is a deficient number, since it is larger than the sum of its proper divisors (1).

21344212327 is an equidigital number, since it uses as much as digits as its factorization.

21344212327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 31.

Adding to 21344212327 its reverse (72321244312), we get a palindrome (93665456639).

The spelling of 21344212327 in words is "twenty-one billion, three hundred forty-four million, two hundred twelve thousand, three hundred twenty-seven".