12120312122 has 4 divisors (see below), whose sum is σ = 18180468186. Its totient is φ = 6060156060.

The previous prime is 12120312077. The next prime is 12120312137. The reversal of 12120312122 is 22121302121.

12120312122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12119587921 + 724201 = 110089^2 + 851^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12120312122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3030078029 + ... + 3030078032.

Almost surely, 2^12120312122 is an apocalyptic number.

12120312122 is a deficient number, since it is larger than the sum of its proper divisors (6060156064).

12120312122 is an equidigital number, since it uses as much as digits as its factorization.

12120312122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060156063.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12120312122 its reverse (22121302121), we get a palindrome (34241614243).

The spelling of 12120312122 in words is "twelve billion, one hundred twenty million, three hundred twelve thousand, one hundred twenty-two".