12222202122 has 48 divisors (see below), whose sum is σ = 30196038600. Its totient is φ = 3539460096.

The previous prime is 12222202087. The next prime is 12222202129. The reversal of 12222202122 is 22120222221.

It can be written as a sum of positive squares in 4 ways, for example, as 9828937881 + 2393264241 = 99141^2 + 48921^2 .

It is a super-2 number, since 2×12222202122² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12222202095 and 12222202104.

It is not an unprimeable number, because it can be changed into a prime (12222202129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1532247 + ... + 1540202.

Almost surely, 2^12222202122 is an apocalyptic number.

12222202122 is an abundant number, since it is smaller than the sum of its proper divisors (17973836478).

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

12222202122 is a wasteful number, since it uses less digits than its factorization.

12222202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3072487 (or 3072484 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 12222202122 its reverse (22120222221), we get a palindrome (34342424343).

The spelling of 12222202122 in words is "twelve billion, two hundred twenty-two million, two hundred two thousand, one hundred twenty-two".