12215432399 has 16 divisors (see below), whose sum is σ = 13216784256. Its totient is φ = 11245785600.

The previous prime is 12215432351. The next prime is 12215432401. The reversal of 12215432399 is 99323451221.

12215432399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12215432399 - 2⁸ = 12215432143 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 (12215432309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1899209 + ... + 1905629.

It is an arithmetic number, because the mean of its divisors is an integer number (826049016).

Almost surely, 2^12215432399 is an apocalyptic number.

12215432399 is a deficient number, since it is larger than the sum of its proper divisors (1001351857).

12215432399 is a wasteful number, since it uses less digits than its factorization.

12215432399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8866.

The product of its digits is 116640, while the sum is 41.

The spelling of 12215432399 in words is "twelve billion, two hundred fifteen million, four hundred thirty-two thousand, three hundred ninety-nine".