12031013203221 has 32 divisors (see below), whose sum is σ = 17571040266240. Its totient is φ = 7288402451456.

The previous prime is 12031013203213. The next prime is 12031013203241. The reversal of 12031013203221 is 12230231013021.

It is not a de Polignac number, because 12031013203221 - 2³ = 12031013203213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031013203241) 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 31 ways as a sum of consecutive naturals, for example, 118930555 + ... + 119031671.

It is an arithmetic number, because the mean of its divisors is an integer number (549095008320).

Almost surely, 2^{12031013203221} is an apocalyptic number.

It is an amenable number.

12031013203221 is a deficient number, since it is larger than the sum of its proper divisors (5540027063019).

12031013203221 is a wasteful number, since it uses less digits than its factorization.

12031013203221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181613.

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

Adding to 12031013203221 its reverse (12230231013021), we get a palindrome (24261244216242).

The spelling of 12031013203221 in words is "twelve trillion, thirty-one billion, thirteen million, two hundred three thousand, two hundred twenty-one".