13121220012203 has 4 divisors (see below), whose sum is σ = 13124483189568. Its totient is φ = 13117956834840.

The previous prime is 13121220012179. The next prime is 13121220012227. The reversal of 13121220012203 is 30221002212131.

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

It is an interprime number because it is at equal distance from previous prime (13121220012179) and next prime (13121220012227).

It is a cyclic number.

It is not a de Polignac number, because 13121220012203 - 2⁶ = 13121220012139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13121220092203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1631582651 + ... + 1631590692.

It is an arithmetic number, because the mean of its divisors is an integer number (3281120797392).

Almost surely, 2^{13121220012203} is an apocalyptic number.

13121220012203 is a deficient number, since it is larger than the sum of its proper divisors (3263177365).

13121220012203 is an equidigital number, since it uses as much as digits as its factorization.

13121220012203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3263177364.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 13121220012203 its reverse (30221002212131), we get a palindrome (43342222224334).

The spelling of 13121220012203 in words is "thirteen trillion, one hundred twenty-one billion, two hundred twenty million, twelve thousand, two hundred three".