12211701312 has 28 divisors (see below), whose sum is σ = 32310126896. Its totient is φ = 4070567040.

The previous prime is 12211701301. The next prime is 12211701317. The reversal of 12211701312 is 21310711221.

It is not an unprimeable number, because it can be changed into a prime (12211701317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31801114 + ... + 31801497.

Almost surely, 2^12211701312 is an apocalyptic number.

12211701312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12211701312 is an abundant number, since it is smaller than the sum of its proper divisors (20098425584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12211701312 is an equidigital number, since it uses as much as digits as its factorization.

12211701312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63602626 (or 63602616 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 21.

Subtracting 12211701312 from its reverse (21310711221), we obtain a palindrome (9099009909).

The spelling of 12211701312 in words is "twelve billion, two hundred eleven million, seven hundred one thousand, three hundred twelve".