13121515255233 has 96 divisors (see below), whose sum is σ = 23178097631232. Its totient is φ = 6516939475200.

The previous prime is 13121515255229. The next prime is 13121515255271. The reversal of 13121515255233 is 33255251512131.

It is not a de Polignac number, because 13121515255233 - 2² = 13121515255229 is a prime.

It is a super-2 number, since 2×13121515255233² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13121515255191 and 13121515255200.

It is not an unprimeable number, because it can be changed into a prime (13121515255223) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 79990288 + ... + 80154158.

It is an arithmetic number, because the mean of its divisors is an integer number (241438516992).

Almost surely, 2^{13121515255233} is an apocalyptic number.

It is an amenable number.

13121515255233 is a deficient number, since it is larger than the sum of its proper divisors (10056582375999).

13121515255233 is a wasteful number, since it uses less digits than its factorization.

13121515255233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166075 (or 166068 counting only the distinct ones).

The product of its digits is 135000, while the sum is 39.

Adding to 13121515255233 its reverse (33255251512131), we get a palindrome (46376766767364).

The spelling of 13121515255233 in words is "thirteen trillion, one hundred twenty-one billion, five hundred fifteen million, two hundred fifty-five thousand, two hundred thirty-three".