12212021222 has 8 divisors (see below), whose sum is σ = 18506877816. Its totient is φ = 6043061952.

The previous prime is 12212021219. The next prime is 12212021279. The reversal of 12212021222 is 22212021221.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12212021222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31474088 + ... + 31474475.

It is an arithmetic number, because the mean of its divisors is an integer number (2313359727).

Almost surely, 2^12212021222 is an apocalyptic number.

12212021222 is a deficient number, since it is larger than the sum of its proper divisors (6294856594).

12212021222 is an equidigital number, since it uses as much as digits as its factorization.

12212021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62948662.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12212021222 its reverse (22212021221), we get a palindrome (34424042443).

Subtracting 12212021222 from its reverse (22212021221), we obtain a palindrome (9999999999).

The spelling of 12212021222 in words is "twelve billion, two hundred twelve million, twenty-one thousand, two hundred twenty-two".