12221212202222 has 4 divisors (see below), whose sum is σ = 18331818303336. Its totient is φ = 6110606101110.

The previous prime is 12221212202201. The next prime is 12221212202249. The reversal of 12221212202222 is 22220221212221.

12221212202222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3055303050554 + ... + 3055303050557.

It is an arithmetic number, because the mean of its divisors is an integer number (4582954575834).

Almost surely, 2^{12221212202222} is an apocalyptic number.

12221212202222 is a deficient number, since it is larger than the sum of its proper divisors (6110606101114).

12221212202222 is an equidigital number, since it uses as much as digits as its factorization.

12221212202222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110606101113.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 12221212202222 its reverse (22220221212221), we get a palindrome (34441433414443).

Subtracting 12221212202222 from its reverse (22220221212221), we obtain a palindrome (9999009009999).

The spelling of 12221212202222 in words is "twelve trillion, two hundred twenty-one billion, two hundred twelve million, two hundred two thousand, two hundred twenty-two".