13001320001209 has 4 divisors (see below), whose sum is σ = 13001345185780. Its totient is φ = 13001294816640.

The previous prime is 13001320001167. The next prime is 13001320001231. The reversal of 13001320001209 is 90210002310031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2908975847184 + 10092344154025 = 1705572^2 + 3176845^2 .

It is a cyclic number.

It is not a de Polignac number, because 13001320001209 - 2⁴³ = 4205226979001 is a prime.

It is a super-2 number, since 2×13001320001209² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13001320001209.

It is not an unprimeable number, because it can be changed into a prime (13001320001009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11801364 + ... + 12855925.

It is an arithmetic number, because the mean of its divisors is an integer number (3250336296445).

Almost surely, 2^{13001320001209} is an apocalyptic number.

It is an amenable number.

13001320001209 is a deficient number, since it is larger than the sum of its proper divisors (25184571).

13001320001209 is an equidigital number, since it uses as much as digits as its factorization.

13001320001209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25184570.

The product of its (nonzero) digits is 324, while the sum is 22.

The spelling of 13001320001209 in words is "thirteen trillion, one billion, three hundred twenty million, one thousand, two hundred nine".