12002201211221 has 8 divisors (see below), whose sum is σ = 12925474710624. Its totient is φ = 11078931605040.

The previous prime is 12002201211179. The next prime is 12002201211241. The reversal of 12002201211221 is 12211210220021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12002201211221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12002201211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002201211241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10072010 + ... + 11200436.

It is an arithmetic number, because the mean of its divisors is an integer number (1615684338828).

Almost surely, 2^{12002201211221} is an apocalyptic number.

It is an amenable number.

12002201211221 is a deficient number, since it is larger than the sum of its proper divisors (923273499403).

12002201211221 is a wasteful number, since it uses less digits than its factorization.

12002201211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946611.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12002201211221 its reverse (12211210220021), we get a palindrome (24213411431242).

The spelling of 12002201211221 in words is "twelve trillion, two billion, two hundred one million, two hundred eleven thousand, two hundred twenty-one".