13121202112203 has 4 divisors (see below), whose sum is σ = 17494936149608. Its totient is φ = 8747468074800.

The previous prime is 13121202112147. The next prime is 13121202112217. The reversal of 13121202112203 is 30221120212131.

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

It is not a de Polignac number, because 13121202112203 - 2³⁸ = 12846324205259 is a prime.

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 13121202112203.

It is not an unprimeable number, because it can be changed into a prime (13121202112243) 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, 2186867018698 + ... + 2186867018703.

It is an arithmetic number, because the mean of its divisors is an integer number (4373734037402).

Almost surely, 2^{13121202112203} is an apocalyptic number.

13121202112203 is a deficient number, since it is larger than the sum of its proper divisors (4373734037405).

13121202112203 is an equidigital number, since it uses as much as digits as its factorization.

13121202112203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4373734037404.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 13121202112203 its reverse (30221120212131), we get a palindrome (43342322324334).

The spelling of 13121202112203 in words is "thirteen trillion, one hundred twenty-one billion, two hundred two million, one hundred twelve thousand, two hundred three".