12221221200002 has 16 divisors (see below), whose sum is σ = 19411474949280. Its totient is φ = 5750777702208.

The previous prime is 12221221199977. The next prime is 12221221200029. The reversal of 12221221200002 is 20000212212221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 7 ways as a sum of consecutive naturals, for example, 11522588 + ... + 12538439.

It is an arithmetic number, because the mean of its divisors is an integer number (1213217184330).

Almost surely, 2^{12221221200002} is an apocalyptic number.

12221221200002 is a deficient number, since it is larger than the sum of its proper divisors (7190253749278).

12221221200002 is a wasteful number, since it uses less digits than its factorization.

12221221200002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24075985.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12221221200002 its reverse (20000212212221), we get a palindrome (32221433412223).

The spelling of 12221221200002 in words is "twelve trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred thousand, two".