12121311232323 has 80 divisors (see below), whose sum is σ = 18956225509056. Its totient is φ = 7711542558720.

The previous prime is 12121311232321. The next prime is 12121311232351. The reversal of 12121311232323 is 32323211312121.

12121311232323 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 1 + 311 + 2 + 323 + 23 = 666.

It is not a de Polignac number, because 12121311232323 - 2¹ = 12121311232321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12121311232321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 40920315 + ... + 41215467.

Almost surely, 2^{12121311232323} is an apocalyptic number.

12121311232323 is a deficient number, since it is larger than the sum of its proper divisors (6834914276733).

12121311232323 is a wasteful number, since it uses less digits than its factorization.

12121311232323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295466 (or 295457 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

Adding to 12121311232323 its reverse (32323211312121), we get a palindrome (44444522544444).

The spelling of 12121311232323 in words is "twelve trillion, one hundred twenty-one billion, three hundred eleven million, two hundred thirty-two thousand, three hundred twenty-three".