13221102123 has 10 divisors (see below), whose sum is σ = 19750041564. Its totient is φ = 8814068028.

The previous prime is 13221102077. The next prime is 13221102127. The reversal of 13221102123 is 32120112231.

It is not a de Polignac number, because 13221102123 - 2²⁰ = 13220053547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13221102096 and 13221102105.

It is not an unprimeable number, because it can be changed into a prime (13221102127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 81611661 + ... + 81611822.

Almost surely, 2^13221102123 is an apocalyptic number.

13221102123 is a deficient number, since it is larger than the sum of its proper divisors (6528939441).

13221102123 is an equidigital number, since it uses as much as digits as its factorization.

13221102123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163223495 (or 163223486 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13221102123 its reverse (32120112231), we get a palindrome (45341214354).

The spelling of 13221102123 in words is "thirteen billion, two hundred twenty-one million, one hundred two thousand, one hundred twenty-three".