12120222122 has 4 divisors (see below), whose sum is σ = 18180333186. Its totient is φ = 6060111060.

The previous prime is 12120222109. The next prime is 12120222137. The reversal of 12120222122 is 22122202121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22122202121 = 7993 ⋅2767697.

It can be written as a sum of positive squares in only one way, i.e., 9383990641 + 2736231481 = 96871^2 + 52309^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12120222122.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3030055529 + ... + 3030055532.

Almost surely, 2^12120222122 is an apocalyptic number.

12120222122 is a deficient number, since it is larger than the sum of its proper divisors (6060111064).

12120222122 is an equidigital number, since it uses as much as digits as its factorization.

12120222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060111063.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12120222122 its reverse (22122202121), we get a palindrome (34242424243).

The spelling of 12120222122 in words is "twelve billion, one hundred twenty million, two hundred twenty-two thousand, one hundred twenty-two".