12001232103221 has 8 divisors (see below), whose sum is σ = 12023583483288. Its totient is φ = 11978881344000.

The previous prime is 12001232103173. The next prime is 12001232103239. The reversal of 12001232103221 is 12230123210021.

It can be written as a sum of positive squares in 4 ways, for example, as 4253860875121 + 7747371228100 = 2062489^2 + 2783410^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12001232103221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12001232103193 and 12001232103202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001232103241) 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, 60623561 + ... + 60821201.

It is an arithmetic number, because the mean of its divisors is an integer number (1502947935411).

Almost surely, 2^{12001232103221} is an apocalyptic number.

It is an amenable number.

12001232103221 is a deficient number, since it is larger than the sum of its proper divisors (22351380067).

12001232103221 is a wasteful number, since it uses less digits than its factorization.

12001232103221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310423.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12001232103221 its reverse (12230123210021), we get a palindrome (24231355313242).

The spelling of 12001232103221 in words is "twelve trillion, one billion, two hundred thirty-two million, one hundred three thousand, two hundred twenty-one".