12002020233221 has 4 divisors (see below), whose sum is σ = 12112130510700. Its totient is φ = 11891909955744.

The previous prime is 12002020233173. The next prime is 12002020233257. The reversal of 12002020233221 is 12233202020021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4115274760996 + 7886745472225 = 2028614^2 + 2808335^2 .

It is a cyclic number.

It is not a de Polignac number, because 12002020233221 - 2¹⁰ = 12002020232197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12002020233193 and 12002020233202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002020233121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55055138576 + ... + 55055138793.

It is an arithmetic number, because the mean of its divisors is an integer number (3028032627675).

Almost surely, 2^{12002020233221} is an apocalyptic number.

It is an amenable number.

12002020233221 is a deficient number, since it is larger than the sum of its proper divisors (110110277479).

12002020233221 is a wasteful number, since it uses less digits than its factorization.

12002020233221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110110277478.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12002020233221 its reverse (12233202020021), we get a palindrome (24235222253242).

The spelling of 12002020233221 in words is "twelve trillion, two billion, twenty million, two hundred thirty-three thousand, two hundred twenty-one".