12221021220222 has 16 divisors (see below), whose sum is σ = 24442386404112. Its totient is φ = 4073616412800.

The previous prime is 12221021220167. The next prime is 12221021220253. The reversal of 12221021220222 is 22202212012221.

It is a super-3 number, since 3×12221021220222³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13868779 + ... + 14723622.

It is an arithmetic number, because the mean of its divisors is an integer number (1527649150257).

Almost surely, 2^{12221021220222} is an apocalyptic number.

12221021220222 is an abundant number, since it is smaller than the sum of its proper divisors (12221365183890).

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

12221021220222 is a wasteful number, since it uses less digits than its factorization.

12221021220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28663643.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 12221021220222 its reverse (22202212012221), we get a palindrome (34423233232443).

The spelling of 12221021220222 in words is "twelve trillion, two hundred twenty-one billion, twenty-one million, two hundred twenty thousand, two hundred twenty-two".