12002211021221 has 8 divisors (see below), whose sum is σ = 12887212497984. Its totient is φ = 11137097218240.

The previous prime is 12002211021149. The next prime is 12002211021223. The reversal of 12002211021221 is 12212011220021.

12002211021221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12002211021221 - 2¹⁰ = 12002211020197 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12002211021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002211021223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4971917195 + ... + 4971919608.

It is an arithmetic number, because the mean of its divisors is an integer number (1610901562248).

Almost surely, 2^{12002211021221} is an apocalyptic number.

It is an amenable number.

12002211021221 is a deficient number, since it is larger than the sum of its proper divisors (885001476763).

12002211021221 is an equidigital number, since it uses as much as digits as its factorization.

12002211021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9943836891.

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

Adding to 12002211021221 its reverse (12212011220021), we get a palindrome (24214222241242).

The spelling of 12002211021221 in words is "twelve trillion, two billion, two hundred eleven million, twenty-one thousand, two hundred twenty-one".