12121332123231 has 24 divisors (see below), whose sum is σ = 17881534105344. Its totient is φ = 7908768501840.

The previous prime is 12121332123163. The next prime is 12121332123247. The reversal of 12121332123231 is 13232123312121.

12121332123231 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 1 + 332 + 1 + 2 + 323 + 1 = 666.

12121332123231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12121332123231 - 2³⁹ = 11571576309343 is a prime.

It is a super-2 number, since 2×12121332123231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12121332123195 and 12121332123204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121332123031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19003396 + ... + 19630886.

It is an arithmetic number, because the mean of its divisors is an integer number (745063921056).

Almost surely, 2^{12121332123231} is an apocalyptic number.

12121332123231 is a deficient number, since it is larger than the sum of its proper divisors (5760201982113).

12121332123231 is a wasteful number, since it uses less digits than its factorization.

12121332123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673211 (or 673208 counting only the distinct ones).

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

Adding to 12121332123231 its reverse (13232123312121), we get a palindrome (25353455435352).

The spelling of 12121332123231 in words is "twelve trillion, one hundred twenty-one billion, three hundred thirty-two million, one hundred twenty-three thousand, two hundred thirty-one".