13231021213121 has 8 divisors (see below), whose sum is σ = 13544128488000. Its totient is φ = 12918159806832.

The previous prime is 13231021213103. The next prime is 13231021213159. The reversal of 13231021213121 is 12131212013231.

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 a de Polignac number, because none of the positive numbers 2^k-13231021213121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13231021213181) 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, 61358246 + ... + 61573503.

It is an arithmetic number, because the mean of its divisors is an integer number (1693016061000).

Almost surely, 2^{13231021213121} is an apocalyptic number.

It is an amenable number.

13231021213121 is a deficient number, since it is larger than the sum of its proper divisors (313107274879).

13231021213121 is a wasteful number, since it uses less digits than its factorization.

13231021213121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122934295.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 13231021213121 its reverse (12131212013231), we get a palindrome (25362233226352).

The spelling of 13231021213121 in words is "thirteen trillion, two hundred thirty-one billion, twenty-one million, two hundred thirteen thousand, one hundred twenty-one".