13323121021123 has 4 divisors (see below), whose sum is σ = 13332379619520. Its totient is φ = 13313862422728.

The previous prime is 13323121021109. The next prime is 13323121021129. The reversal of 13323121021123 is 32112012132331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13323121021123 is a prime.

It is a super-3 number, since 3×13323121021123³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13323121021129) 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, 4629297040 + ... + 4629299917.

It is an arithmetic number, because the mean of its divisors is an integer number (3333094904880).

Almost surely, 2^{13323121021123} is an apocalyptic number.

13323121021123 is a deficient number, since it is larger than the sum of its proper divisors (9258598397).

13323121021123 is an equidigital number, since it uses as much as digits as its factorization.

13323121021123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9258598396.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 13323121021123 its reverse (32112012132331), we get a palindrome (45435133153454).

The spelling of 13323121021123 in words is "thirteen trillion, three hundred twenty-three billion, one hundred twenty-one million, twenty-one thousand, one hundred twenty-three".