12031011210321 has 48 divisors (see below), whose sum is σ = 18215611015680. Its totient is φ = 7637315051520.

The previous prime is 12031011210241. The next prime is 12031011210347. The reversal of 12031011210321 is 12301211013021.

12031011210321 is a `hidden beast` number, since 1 + 2 + 0 + 310 + 11 + 21 + 0 + 321 = 666.

It is not a de Polignac number, because 12031011210321 - 2³⁴ = 12013831341137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12031011210294 and 12031011210303.

It is not an unprimeable number, because it can be changed into a prime (12031011210371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 155158041 + ... + 155235561.

It is an arithmetic number, because the mean of its divisors is an integer number (379491896160).

Almost surely, 2^{12031011210321} is an apocalyptic number.

It is an amenable number.

12031011210321 is a deficient number, since it is larger than the sum of its proper divisors (6184599805359).

12031011210321 is a wasteful number, since it uses less digits than its factorization.

12031011210321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80926 (or 80923 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 12031011210321 its reverse (12301211013021), we get a palindrome (24332222223342).

The spelling of 12031011210321 in words is "twelve trillion, thirty-one billion, eleven million, two hundred ten thousand, three hundred twenty-one".