12012220220100 has 72 divisors (see below), whose sum is σ = 34774917158688. Its totient is φ = 3201455961600.

The previous prime is 12012220220081. The next prime is 12012220220153. The reversal of 12012220220100 is 102202221021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12012220220100.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 10733286 + ... + 11799485.

Almost surely, 2^{12012220220100} is an apocalyptic number.

12012220220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012220220100 is an abundant number, since it is smaller than the sum of its proper divisors (22762696938588).

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

12012220220100 is a wasteful number, since it uses less digits than its factorization.

12012220220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22534565 (or 22534558 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12012220220100 its reverse (102202221021), we get a palindrome (12114422441121).

The spelling of 12012220220100 in words is "twelve trillion, twelve billion, two hundred twenty million, two hundred twenty thousand, one hundred".