12022211221 has 8 divisors (see below), whose sum is σ = 12707913600. Its totient is φ = 11341804320.

The previous prime is 12022211219. The next prime is 12022211293. The reversal of 12022211221 is 12211222021.

It is a happy number.

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 12022211221 - 2¹ = 12022211219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12022211195 and 12022211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022211321) 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, 1319200 + ... + 1328281.

It is an arithmetic number, because the mean of its divisors is an integer number (1588489200).

Almost surely, 2^12022211221 is an apocalyptic number.

It is an amenable number.

12022211221 is a deficient number, since it is larger than the sum of its proper divisors (685702379).

12022211221 is a wasteful number, since it uses less digits than its factorization.

12022211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2647739.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12022211221 its reverse (12211222021), we get a palindrome (24233433242).

The spelling of 12022211221 in words is "twelve billion, twenty-two million, two hundred eleven thousand, two hundred twenty-one".