21244232323 has 2 divisors, whose sum is σ = 21244232324. Its totient is φ = 21244232322.

The previous prime is 21244232311. The next prime is 21244232333. The reversal of 21244232323 is 32323244212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21244232323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21244232291 and 21244232300.

It is not a weakly prime, because it can be changed into another prime (21244232333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10622116161 + 10622116162.

It is an arithmetic number, because the mean of its divisors is an integer number (10622116162).

Almost surely, 2^21244232323 is an apocalyptic number.

21244232323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21244232323 is an equidigital number, since it uses as much as digits as its factorization.

21244232323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 28.

Adding to 21244232323 its reverse (32323244212), we get a palindrome (53567476535).

The spelling of 21244232323 in words is "twenty-one billion, two hundred forty-four million, two hundred thirty-two thousand, three hundred twenty-three".