12022212212221 has 4 divisors (see below), whose sum is σ = 12026519707744. Its totient is φ = 12017904716700.

The previous prime is 12022212212207. The next prime is 12022212212251. The reversal of 12022212212221 is 12221221222021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12022212212221 - 2²⁵ = 12022178657789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12022212212192 and 12022212212201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022212212251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2153743575 + ... + 2153749156.

It is an arithmetic number, because the mean of its divisors is an integer number (3006629926936).

Almost surely, 2^{12022212212221} is an apocalyptic number.

It is an amenable number.

12022212212221 is a deficient number, since it is larger than the sum of its proper divisors (4307495523).

12022212212221 is an equidigital number, since it uses as much as digits as its factorization.

12022212212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4307495522.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 12022212212221 its reverse (12221221222021), we get a palindrome (24243433434242).

The spelling of 12022212212221 in words is "twelve trillion, twenty-two billion, two hundred twelve million, two hundred twelve thousand, two hundred twenty-one".