12212656236321 has 32 divisors (see below), whose sum is σ = 18491269991040. Its totient is φ = 7122563195904.

The previous prime is 12212656236317. The next prime is 12212656236329. The reversal of 12212656236321 is 12363265621221.

12212656236321 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 12212656236321 - 2² = 12212656236317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12212656236329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118848270 + ... + 118950983.

It is an arithmetic number, because the mean of its divisors is an integer number (577852187220).

Almost surely, 2^{12212656236321} is an apocalyptic number.

It is an amenable number.

12212656236321 is a deficient number, since it is larger than the sum of its proper divisors (6278613754719).

12212656236321 is a wasteful number, since it uses less digits than its factorization.

12212656236321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237799345.

The product of its digits is 311040, while the sum is 42.

The spelling of 12212656236321 in words is "twelve trillion, two hundred twelve billion, six hundred fifty-six million, two hundred thirty-six thousand, three hundred twenty-one".