12122222220222 has 16 divisors (see below), whose sum is σ = 24257157858432. Its totient is φ = 4038621837080.

The previous prime is 12122222220221. The next prime is 12122222220293. The reversal of 12122222220222 is 22202222222121.

It is a junction number, because it is equal to n+sod(n) for n = 12122222220192 and 12122222220201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122222220221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529713354 + ... + 529736237.

It is an arithmetic number, because the mean of its divisors is an integer number (1516072366152).

Almost surely, 2^{12122222220222} is an apocalyptic number.

12122222220222 is an abundant number, since it is smaller than the sum of its proper divisors (12134935638210).

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

12122222220222 is a wasteful number, since it uses less digits than its factorization.

12122222220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059451503.

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

Adding to 12122222220222 its reverse (22202222222121), we get a palindrome (34324444442343).

The spelling of 12122222220222 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty thousand, two hundred twenty-two".