13121099 has 2 divisors, whose sum is σ = 13121100. Its totient is φ = 13121098.

The previous prime is 13121083. The next prime is 13121117. The reversal of 13121099 is 99012131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13121099 - 2⁴ = 13121083 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13127099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560549 + 6560550.

It is an arithmetic number, because the mean of its divisors is an integer number (6560550).

Almost surely, 2^13121099 is an apocalyptic number.

13121099 is a deficient number, since it is larger than the sum of its proper divisors (1).

13121099 is an equidigital number, since it uses as much as digits as its factorization.

13121099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 13121099 is about 3622.3057573871. The cubic root of 13121099 is about 235.8613268916.

The spelling of 13121099 in words is "thirteen million, one hundred twenty-one thousand, ninety-nine".