13202021209 has 16 divisors (see below), whose sum is σ = 14275170000. Its totient is φ = 12137193216.

The previous prime is 13202021201. The next prime is 13202021227. The reversal of 13202021209 is 90212020231.

It can be written as a sum of positive squares in 8 ways, for example, as 1161787225 + 12040233984 = 34085^2 + 109728^2 .

It is a cyclic number.

It is not a de Polignac number, because 13202021209 - 2³ = 13202021201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13202021209.

It is not an unprimeable number, because it can be changed into a prime (13202021201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6772767 + ... + 6774715.

It is an arithmetic number, because the mean of its divisors is an integer number (892198125).

Almost surely, 2^13202021209 is an apocalyptic number.

It is an amenable number.

13202021209 is a deficient number, since it is larger than the sum of its proper divisors (1073148791).

13202021209 is a wasteful number, since it uses less digits than its factorization.

13202021209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 13202021209 in words is "thirteen billion, two hundred two million, twenty-one thousand, two hundred nine".