13121121320203 has 8 divisors (see below), whose sum is σ = 14744805229728. Its totient is φ = 11585204108544.

The previous prime is 13121121320191. The next prime is 13121121320261. The reversal of 13121121320203 is 30202312112131.

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

It is a cyclic number.

It is not a de Polignac number, because 13121121320203 - 2²⁵ = 13121087765771 is a prime.

It is a super-2 number, since 2×13121121320203² (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 (13121121320003) 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, 21941674150 + ... + 21941674747.

It is an arithmetic number, because the mean of its divisors is an integer number (1843100653716).

Almost surely, 2^{13121121320203} is an apocalyptic number.

13121121320203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13121121320203 is a deficient number, since it is larger than the sum of its proper divisors (1623683909525).

13121121320203 is a wasteful number, since it uses less digits than its factorization.

13121121320203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43883348933.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 13121121320203 its reverse (30202312112131), we get a palindrome (43323433432334).

The spelling of 13121121320203 in words is "thirteen trillion, one hundred twenty-one billion, one hundred twenty-one million, three hundred twenty thousand, two hundred three".