13221923347 has 2 divisors, whose sum is σ = 13221923348. Its totient is φ = 13221923346.

The previous prime is 13221923317. The next prime is 13221923371. The reversal of 13221923347 is 74332912231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13221923347 - 2⁷ = 13221923219 is a prime.

It is not a weakly prime, because it can be changed into another prime (13221923317) 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, 6610961673 + 6610961674.

It is an arithmetic number, because the mean of its divisors is an integer number (6610961674).

Almost surely, 2^13221923347 is an apocalyptic number.

13221923347 is a deficient number, since it is larger than the sum of its proper divisors (1).

13221923347 is an equidigital number, since it uses as much as digits as its factorization.

13221923347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 37.

The spelling of 13221923347 in words is "thirteen billion, two hundred twenty-one million, nine hundred twenty-three thousand, three hundred forty-seven".