13123533244121 has 8 divisors (see below), whose sum is σ = 13246267397184. Its totient is φ = 13000800652560.

The previous prime is 13123533244093. The next prime is 13123533244169. The reversal of 13123533244121 is 12144233532131.

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 not a de Polignac number, because 13123533244121 - 2²⁶ = 13123466135257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13123533244621) 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, 23042636 + ... + 23605298.

It is an arithmetic number, because the mean of its divisors is an integer number (1655783424648).

Almost surely, 2^{13123533244121} is an apocalyptic number.

It is an amenable number.

13123533244121 is a deficient number, since it is larger than the sum of its proper divisors (122734153063).

13123533244121 is a wasteful number, since it uses less digits than its factorization.

13123533244121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780751.

The product of its digits is 51840, while the sum is 35.

Adding to 13123533244121 its reverse (12144233532131), we get a palindrome (25267766776252).

The spelling of 13123533244121 in words is "thirteen trillion, one hundred twenty-three billion, five hundred thirty-three million, two hundred forty-four thousand, one hundred twenty-one".