12002222221000 has 256 divisors, whose sum is σ = 31728746649600. Its totient is φ = 4211571168000.

The previous prime is 12002222220983. The next prime is 12002222221009. The reversal of 12002222221000 is 12222220021.

It is not an unprimeable number, because it can be changed into a prime (12002222221009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39106141 + ... + 39411859.

It is an arithmetic number, because the mean of its divisors is an integer number (123940416600).

Almost surely, 2^{12002222221000} is an apocalyptic number.

12002222221000 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 12002222221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15864373324800).

12002222221000 is an abundant number, since it is smaller than the sum of its proper divisors (19726524428600).

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

12002222221000 is a wasteful number, since it uses less digits than its factorization.

12002222221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305877 (or 305863 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12002222221000 its reverse (12222220021), we get a palindrome (12014444441021).

The spelling of 12002222221000 in words is "twelve trillion, two billion, two hundred twenty-two million, two hundred twenty-one thousand".