12388814382221 has 8 divisors (see below), whose sum is σ = 12424078105824. Its totient is φ = 12353561620560.

The previous prime is 12388814382107. The next prime is 12388814382239. The reversal of 12388814382221 is 12228341888321.

12388814382221 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 12388814382221 - 2¹⁸ = 12388814120077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12388814382421) 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, 474275 + ... + 5000256.

It is an arithmetic number, because the mean of its divisors is an integer number (1553009763228).

Almost surely, 2^{12388814382221} is an apocalyptic number.

It is an amenable number.

12388814382221 is a deficient number, since it is larger than the sum of its proper divisors (35263723603).

12388814382221 is an equidigital number, since it uses as much as digits as its factorization.

12388814382221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5480971.

The product of its digits is 2359296, while the sum is 53.

The spelling of 12388814382221 in words is "twelve trillion, three hundred eighty-eight billion, eight hundred fourteen million, three hundred eighty-two thousand, two hundred twenty-one".