12031230021231 has 16 divisors (see below), whose sum is σ = 16613697328128. Its totient is φ = 7739598568800.

The previous prime is 12031230021229. The next prime is 12031230021241. The reversal of 12031230021231 is 13212003213021.

It is not a de Polignac number, because 12031230021231 - 2¹ = 12031230021229 is a prime.

It is a super-2 number, since 2×12031230021231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12031230021198 and 12031230021207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031230021241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 600890500 + ... + 600910521.

It is an arithmetic number, because the mean of its divisors is an integer number (1038356083008).

Almost surely, 2^{12031230021231} is an apocalyptic number.

12031230021231 is a deficient number, since it is larger than the sum of its proper divisors (4582467306897).

12031230021231 is a wasteful number, since it uses less digits than its factorization.

12031230021231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201801142.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 12031230021231 its reverse (13212003213021), we get a palindrome (25243233234252).

The spelling of 12031230021231 in words is "twelve trillion, thirty-one billion, two hundred thirty million, twenty-one thousand, two hundred thirty-one".