13121202223201 has 4 divisors (see below), whose sum is σ = 13121981918100. Its totient is φ = 13120422528304.

The previous prime is 13121202223193. The next prime is 13121202223211. The reversal of 13121202223201 is 10232220212131.

13121202223201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3017221110225 + 10103981112976 = 1737015^2 + 3178676^2 .

It is a cyclic number.

It is not a de Polignac number, because 13121202223201 - 2³ = 13121202223193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13121202223211) 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, 389822206 + ... + 389855863.

It is an arithmetic number, because the mean of its divisors is an integer number (3280495479525).

Almost surely, 2^{13121202223201} is an apocalyptic number.

It is an amenable number.

13121202223201 is a deficient number, since it is larger than the sum of its proper divisors (779694899).

13121202223201 is an equidigital number, since it uses as much as digits as its factorization.

13121202223201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779694898.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 13121202223201 its reverse (10232220212131), we get a palindrome (23353422435332).

The spelling of 13121202223201 in words is "thirteen trillion, one hundred twenty-one billion, two hundred two million, two hundred twenty-three thousand, two hundred one".