12013032232221 has 16 divisors (see below), whose sum is σ = 16714102619520. Its totient is φ = 7660338276800.

The previous prime is 12013032232181. The next prime is 12013032232277. The reversal of 12013032232221 is 12223223031021.

It is a cyclic number.

It is not a de Polignac number, because 12013032232221 - 2¹⁸ = 12013031970077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12013032232191 and 12013032232200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013032212221) 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 15 ways as a sum of consecutive naturals, for example, 2045371 + ... + 5311271.

It is an arithmetic number, because the mean of its divisors is an integer number (1044631413720).

Almost surely, 2^{12013032232221} is an apocalyptic number.

It is an amenable number.

12013032232221 is a deficient number, since it is larger than the sum of its proper divisors (4701070387299).

12013032232221 is a wasteful number, since it uses less digits than its factorization.

12013032232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3319236.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 12013032232221 its reverse (12223223031021), we get a palindrome (24236255263242).

The spelling of 12013032232221 in words is "twelve trillion, thirteen billion, thirty-two million, two hundred thirty-two thousand, two hundred twenty-one".