12022022221 has 8 divisors (see below), whose sum is σ = 13120375104. Its totient is φ = 10924576320.

The previous prime is 12022022179. The next prime is 12022022231. The reversal of 12022022221 is 12222022021.

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 12022022221 - 2¹⁹ = 12021497933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12022022195 and 12022022204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022022231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198876 + ... + 252181.

It is an arithmetic number, because the mean of its divisors is an integer number (1640046888).

Almost surely, 2^12022022221 is an apocalyptic number.

12022022221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12022022221 is a deficient number, since it is larger than the sum of its proper divisors (1098352883).

12022022221 is a wasteful number, since it uses less digits than its factorization.

12022022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453491.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12022022221 its reverse (12222022021), we get a palindrome (24244044242).

The spelling of 12022022221 in words is "twelve billion, twenty-two million, twenty-two thousand, two hundred twenty-one".