12121020122 has 8 divisors (see below), whose sum is σ = 18281981172. Its totient is φ = 6027026400.

The previous prime is 12121020089. The next prime is 12121020133. The reversal of 12121020122 is 22102012121.

12121020122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9641079721 + 2479940401 = 98189^2 + 49799^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12121020097 and 12121020106.

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 in 3 ways as a sum of consecutive naturals, for example, 16741379 + ... + 16742102.

Almost surely, 2^12121020122 is an apocalyptic number.

12121020122 is a deficient number, since it is larger than the sum of its proper divisors (6160961050).

12121020122 is a wasteful number, since it uses less digits than its factorization.

12121020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33483664.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12121020122 its reverse (22102012121), we get a palindrome (34223032243).

The spelling of 12121020122 in words is "twelve billion, one hundred twenty-one million, twenty thousand, one hundred twenty-two".