13121100021103 has 8 divisors (see below), whose sum is σ = 14148554580720. Its totient is φ = 12127332496320.

The previous prime is 13121100021077. The next prime is 13121100021121. The reversal of 13121100021103 is 30112000112131.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13121100021103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121100321103) 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, 8421757900 + ... + 8421759457.

It is an arithmetic number, because the mean of its divisors is an integer number (1768569322590).

Almost surely, 2^{13121100021103} is an apocalyptic number.

13121100021103 is a deficient number, since it is larger than the sum of its proper divisors (1027454559617).

13121100021103 is a wasteful number, since it uses less digits than its factorization.

13121100021103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16843517417.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 13121100021103 its reverse (30112000112131), we get a palindrome (43233100133234).

The spelling of 13121100021103 in words is "thirteen trillion, one hundred twenty-one billion, one hundred million, twenty-one thousand, one hundred three".