12022222112221 has 8 divisors (see below), whose sum is σ = 13282864329024. Its totient is φ = 10823074637760.

The previous prime is 12022222112179. The next prime is 12022222112239. The reversal of 12022222112221 is 12221122222021.

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

It is not a de Polignac number, because 12022222112221 - 2¹⁹ = 12022221587933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12022222112192 and 12022222112201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022222112521) 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, 15373685175 + ... + 15373685956.

It is an arithmetic number, because the mean of its divisors is an integer number (1660358041128).

Almost surely, 2^{12022222112221} is an apocalyptic number.

It is an amenable number.

12022222112221 is a deficient number, since it is larger than the sum of its proper divisors (1260642216803).

12022222112221 is a wasteful number, since it uses less digits than its factorization.

12022222112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30747371171.

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

Adding to 12022222112221 its reverse (12221122222021), we get a palindrome (24243344334242).

The spelling of 12022222112221 in words is "twelve trillion, twenty-two billion, two hundred twenty-two million, one hundred twelve thousand, two hundred twenty-one".