13221812099 has 2 divisors, whose sum is σ = 13221812100. Its totient is φ = 13221812098.

The previous prime is 13221812069. The next prime is 13221812119. The reversal of 13221812099 is 99021812231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13221812099 is a prime.

It is not a weakly prime, because it can be changed into another prime (13221812029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610906049 + 6610906050.

It is an arithmetic number, because the mean of its divisors is an integer number (6610906050).

Almost surely, 2^13221812099 is an apocalyptic number.

13221812099 is a deficient number, since it is larger than the sum of its proper divisors (1).

13221812099 is an equidigital number, since it uses as much as digits as its factorization.

13221812099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 38.

The spelling of 13221812099 in words is "thirteen billion, two hundred twenty-one million, eight hundred twelve thousand, ninety-nine".