12001322220100 has 144 divisors (see below), whose sum is σ = 28268171971200. Its totient is φ = 4407557760000.

The previous prime is 12001322220061. The next prime is 12001322220127. The reversal of 12001322220100 is 102222310021.

It is a happy number.

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 47 ways as a sum of consecutive naturals, for example, 11252766 + ... + 12273034.

It is an arithmetic number, because the mean of its divisors is an integer number (196306749800).

Almost surely, 2^{12001322220100} is an apocalyptic number.

12001322220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12001322220100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14134085985600).

12001322220100 is an abundant number, since it is smaller than the sum of its proper divisors (16266849751100).

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

12001322220100 is a wasteful number, since it uses less digits than its factorization.

12001322220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020494 (or 1020487 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12001322220100 its reverse (102222310021), we get a palindrome (12103544530121).

The spelling of 12001322220100 in words is "twelve trillion, one billion, three hundred twenty-two million, two hundred twenty thousand, one hundred".