12031213013221 has 8 divisors (see below), whose sum is σ = 12446153510400. Its totient is φ = 11616277254960.

The previous prime is 12031213013213. The next prime is 12031213013233. The reversal of 12031213013221 is 12231031213021.

12031213013221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12031213013221 - 2³ = 12031213013213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12031213013192 and 12031213013201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031213013291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4431820 + ... + 6610858.

It is an arithmetic number, because the mean of its divisors is an integer number (1555769188800).

Almost surely, 2^{12031213013221} is an apocalyptic number.

It is an amenable number.

12031213013221 is a deficient number, since it is larger than the sum of its proper divisors (414940497179).

12031213013221 is a wasteful number, since it uses less digits than its factorization.

12031213013221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2369459.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12031213013221 its reverse (12231031213021), we get a palindrome (24262244226242).

The spelling of 12031213013221 in words is "twelve trillion, thirty-one billion, two hundred thirteen million, thirteen thousand, two hundred twenty-one".