12001222000000 has 112 divisors (see below), whose sum is σ = 29885478007860. Its totient is φ = 4800488000000.

The previous prime is 12001221999989. The next prime is 12001222000003. The reversal of 12001222000000 is 22210021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001222000003) by changing a digit.

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 13 ways as a sum of consecutive naturals, for example, 1000306 + ... + 5000305.

Almost surely, 2^{12001222000000} is an apocalyptic number.

12001222000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001222000000 is an abundant number, since it is smaller than the sum of its proper divisors (17884256007860).

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

12001222000000 is an frugal number, since it uses more digits than its factorization.

12001222000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6000655 (or 6000618 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 12001222000000 its reverse (22210021), we get a palindrome (12001244210021).

The spelling of 12001222000000 in words is "twelve trillion, one billion, two hundred twenty-two million", and thus it is an aban number.