12222202221222 has 32 divisors (see below), whose sum is σ = 27937053042432. Its totient is φ = 3491983924704.

The previous prime is 12222202221221. The next prime is 12222202221239. The reversal of 12222202221222 is 22212220222221.

It is a junction number, because it is equal to n+sod(n) for n = 12222202221192 and 12222202221201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222202221221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1051948 + ... + 5054799.

It is an arithmetic number, because the mean of its divisors is an integer number (873032907576).

Almost surely, 2^{12222202221222} is an apocalyptic number.

12222202221222 is an abundant number, since it is smaller than the sum of its proper divisors (15714850821210).

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

12222202221222 is a wasteful number, since it uses less digits than its factorization.

12222202221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6154412.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 12222202221222 its reverse (22212220222221), we get a palindrome (34434422443443).

The spelling of 12222202221222 in words is "twelve trillion, two hundred twenty-two billion, two hundred two million, two hundred twenty-one thousand, two hundred twenty-two".