12212012122222 has 32 divisors (see below), whose sum is σ = 20089099008000. Its totient is φ = 5521527345600.

The previous prime is 12212012122217. The next prime is 12212012122229. The reversal of 12212012122222 is 22222121021221.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12212012122193 and 12212012122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212012122229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80346154 + ... + 80498002.

It is an arithmetic number, because the mean of its divisors is an integer number (627784344000).

Almost surely, 2^{12212012122222} is an apocalyptic number.

12212012122222 is a deficient number, since it is larger than the sum of its proper divisors (7877086885778).

12212012122222 is a wasteful number, since it uses less digits than its factorization.

12212012122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171192.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 12212012122222 its reverse (22222121021221), we get a palindrome (34434133143443).

The spelling of 12212012122222 in words is "twelve trillion, two hundred twelve billion, twelve million, one hundred twenty-two thousand, two hundred twenty-two".