13203123311121 has 8 divisors (see below), whose sum is σ = 17604209005824. Its totient is φ = 8802059911920.

The previous prime is 13203123311117. The next prime is 13203123311129. The reversal of 13203123311121 is 12111332130231.

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

It is not a de Polignac number, because 13203123311121 - 2² = 13203123311117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13203123311091 and 13203123311100.

It is not an unprimeable number, because it can be changed into a prime (13203123311129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4139361 + ... + 6598526.

It is an arithmetic number, because the mean of its divisors is an integer number (2200526125728).

Almost surely, 2^{13203123311121} is an apocalyptic number.

It is an amenable number.

13203123311121 is a deficient number, since it is larger than the sum of its proper divisors (4401085694703).

13203123311121 is a wasteful number, since it uses less digits than its factorization.

13203123311121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11147751.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 13203123311121 its reverse (12111332130231), we get a palindrome (25314455441352).

The spelling of 13203123311121 in words is "thirteen trillion, two hundred three billion, one hundred twenty-three million, three hundred eleven thousand, one hundred twenty-one".