13121222230231 has 4 divisors (see below), whose sum is σ = 13237339241232. Its totient is φ = 13005105219232.

The previous prime is 13121222230187. The next prime is 13121222230241. The reversal of 13121222230231 is 13203222212131.

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

It is a cyclic number.

It is not a de Polignac number, because 13121222230231 - 2³⁷ = 12983783276759 is a prime.

It is a super-2 number, since 2×13121222230231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13121222230196 and 13121222230205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121222230241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58058505331 + ... + 58058505556.

It is an arithmetic number, because the mean of its divisors is an integer number (3309334810308).

Almost surely, 2^{13121222230231} is an apocalyptic number.

13121222230231 is a deficient number, since it is larger than the sum of its proper divisors (116117011001).

13121222230231 is a wasteful number, since it uses less digits than its factorization.

13121222230231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116117011000.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 13121222230231 its reverse (13203222212131), we get a palindrome (26324444442362).

The spelling of 13121222230231 in words is "thirteen trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred thirty thousand, two hundred thirty-one".