12222020221221 has 8 divisors (see below), whose sum is σ = 16299330453280. Its totient is φ = 8146361734992.

The previous prime is 12222020221199. The next prime is 12222020221223. The reversal of 12222020221221 is 12212202022221.

12222020221221 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 not a de Polignac number, because 12222020221221 - 2¹⁹ = 12222019696933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222020221223) 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, 412919191 + ... + 412948788.

It is an arithmetic number, because the mean of its divisors is an integer number (2037416306660).

Almost surely, 2^{12222020221221} is an apocalyptic number.

It is an amenable number.

12222020221221 is a deficient number, since it is larger than the sum of its proper divisors (4077310232059).

12222020221221 is an equidigital number, since it uses as much as digits as its factorization.

12222020221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825872915.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 12222020221221 its reverse (12212202022221), we get a palindrome (24434222243442).

The spelling of 12222020221221 in words is "twelve trillion, two hundred twenty-two billion, twenty million, two hundred twenty-one thousand, two hundred twenty-one".