13221402144123 has 4 divisors (see below), whose sum is σ = 17628536192168. Its totient is φ = 8814268096080.

The previous prime is 13221402144103. The next prime is 13221402144149. The reversal of 13221402144123 is 32144120412231.

It is a happy number.

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

It is not a de Polignac number, because 13221402144123 - 2¹² = 13221402140027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13221402144103) 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, 2203567024018 + ... + 2203567024023.

It is an arithmetic number, because the mean of its divisors is an integer number (4407134048042).

Almost surely, 2^{13221402144123} is an apocalyptic number.

13221402144123 is a deficient number, since it is larger than the sum of its proper divisors (4407134048045).

13221402144123 is an equidigital number, since it uses as much as digits as its factorization.

13221402144123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4407134048044.

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 13221402144123 its reverse (32144120412231), we get a palindrome (45365522556354).

The spelling of 13221402144123 in words is "thirteen trillion, two hundred twenty-one billion, four hundred two million, one hundred forty-four thousand, one hundred twenty-three".