13121320020203 has 8 divisors (see below), whose sum is σ = 13812112099920. Its totient is φ = 12430547569440.

The previous prime is 13121320020199. The next prime is 13121320020217. The reversal of 13121320020203 is 30202002312131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13121320020203 - 2² = 13121320020199 is a prime.

It is a super-2 number, since 2×13121320020203² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13121320020253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3525128 + ... + 6218453.

It is an arithmetic number, because the mean of its divisors is an integer number (1726514012490).

Almost surely, 2^{13121320020203} is an apocalyptic number.

13121320020203 is a deficient number, since it is larger than the sum of its proper divisors (690792079717).

13121320020203 is an equidigital number, since it uses as much as digits as its factorization.

13121320020203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9814477.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13121320020203 its reverse (30202002312131), we get a palindrome (43323322332334).

The spelling of 13121320020203 in words is "thirteen trillion, one hundred twenty-one billion, three hundred twenty million, twenty thousand, two hundred three".