12328603384221 has 12 divisors (see below), whose sum is σ = 17910918984348. Its totient is φ = 8171559852864.

The previous prime is 12328603384211. The next prime is 12328603384271. The reversal of 12328603384221 is 12248330682321.

12328603384221 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 8 + 603 + 38 + 4 + 2 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4956238040121 + 7372365344100 = 2226261^2 + 2715210^2 .

It is not a de Polignac number, because 12328603384221 - 2¹⁴ = 12328603367837 is a prime.

It is a super-2 number, since 2×12328603384221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12328603384211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3959087520 + ... + 3959090633.

It is an arithmetic number, because the mean of its divisors is an integer number (1492576582029).

Almost surely, 2^{12328603384221} is an apocalyptic number.

It is an amenable number.

12328603384221 is a deficient number, since it is larger than the sum of its proper divisors (5582315600127).

12328603384221 is a wasteful number, since it uses less digits than its factorization.

12328603384221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7918178332 (or 7918178329 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 12328603384221 in words is "twelve trillion, three hundred twenty-eight billion, six hundred three million, three hundred eighty-four thousand, two hundred twenty-one".