12213120222 has 24 divisors (see below), whose sum is σ = 27441826776. Its totient is φ = 4071039912.

The previous prime is 12213120197. The next prime is 12213120289. The reversal of 12213120222 is 22202131221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12213120195 and 12213120204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12564453 + ... + 12565424.

It is an arithmetic number, because the mean of its divisors is an integer number (1143409449).

Almost surely, 2^12213120222 is an apocalyptic number.

12213120222 is an abundant number, since it is smaller than the sum of its proper divisors (15228706554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12213120222 is an equidigital number, since it uses as much as digits as its factorization.

12213120222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25129894 (or 25129882 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12213120222 its reverse (22202131221), we get a palindrome (34415251443).

The spelling of 12213120222 in words is "twelve billion, two hundred thirteen million, one hundred twenty thousand, two hundred twenty-two".