12215423012 has 48 divisors (see below), whose sum is σ = 23653499520. Its totient is φ = 5485059072.

The previous prime is 12215422969. The next prime is 12215423023. The reversal of 12215423012 is 21032451221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277073 + ... + 318119.

It is an arithmetic number, because the mean of its divisors is an integer number (492781240).

Almost surely, 2^12215423012 is an apocalyptic number.

It is an amenable number.

12215423012 is a deficient number, since it is larger than the sum of its proper divisors (11438076508).

12215423012 is a wasteful number, since it uses less digits than its factorization.

12215423012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41220 (or 41218 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 12215423012 its reverse (21032451221), we get a palindrome (33247874233).

The spelling of 12215423012 in words is "twelve billion, two hundred fifteen million, four hundred twenty-three thousand, twelve".