12221010012 has 24 divisors (see below), whose sum is σ = 28517731200. Its totient is φ = 4073378416.

The previous prime is 12221009981. The next prime is 12221010013. The reversal of 12221010012 is 21001012221.

12221010012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 12221010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221010013) 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 7 ways as a sum of consecutive naturals, for example, 199039 + ... + 253097.

It is an arithmetic number, because the mean of its divisors is an integer number (1188238800).

Almost surely, 2^12221010012 is an apocalyptic number.

12221010012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12221010012 is an abundant number, since it is smaller than the sum of its proper divisors (16296721188).

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

12221010012 is a wasteful number, since it uses less digits than its factorization.

12221010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72905 (or 72903 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12221010012 its reverse (21001012221), we get a palindrome (33222022233).

The spelling of 12221010012 in words is "twelve billion, two hundred twenty-one million, ten thousand, twelve".