13020209999 has 4 divisors (see below), whose sum is σ = 13020683520. Its totient is φ = 13019736480.

The previous prime is 13020209989. The next prime is 13020210013. The reversal of 13020209999 is 99990202031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99990202031 = 443 ⋅225711517.

It is a cyclic number.

It is not a de Polignac number, because 13020209999 - 2¹⁶ = 13020144463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13020209959) 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 in 3 ways as a sum of consecutive naturals, for example, 192794 + ... + 251415.

It is an arithmetic number, because the mean of its divisors is an integer number (3255170880).

Almost surely, 2^13020209999 is an apocalyptic number.

13020209999 is a deficient number, since it is larger than the sum of its proper divisors (473521).

13020209999 is an equidigital number, since it uses as much as digits as its factorization.

13020209999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473520.

The product of its (nonzero) digits is 78732, while the sum is 44.

The spelling of 13020209999 in words is "thirteen billion, twenty million, two hundred nine thousand, nine hundred ninety-nine".