12102221012 has 48 divisors (see below), whose sum is σ = 24373440000. Its totient is φ = 5150578944.

The previous prime is 12102221011. The next prime is 12102221039. The reversal of 12102221012 is 21012220121.

12102221012 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 (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102221011) 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, 2600864 + ... + 2605512.

It is an arithmetic number, because the mean of its divisors is an integer number (507780000).

Almost surely, 2^12102221012 is an apocalyptic number.

It is an amenable number.

12102221012 is an abundant number, since it is smaller than the sum of its proper divisors (12271218988).

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

12102221012 is a wasteful number, since it uses less digits than its factorization.

12102221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5288 (or 5286 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12102221012 its reverse (21012220121), we get a palindrome (33114441133).

It can be divided in two parts, 1210 and 2221012, that added together give a palindrome (2222222).

The spelling of 12102221012 in words is "twelve billion, one hundred two million, two hundred twenty-one thousand, twelve".