12121110122 has 8 divisors (see below), whose sum is σ = 19834543872. Its totient is φ = 5509595500.

The previous prime is 12121110061. The next prime is 12121110137. The reversal of 12121110122 is 22101112121.

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 = 12121110097 and 12121110106.

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 in 3 ways as a sum of consecutive naturals, for example, 275479754 + ... + 275479797.

It is an arithmetic number, because the mean of its divisors is an integer number (2479317984).

Almost surely, 2^12121110122 is an apocalyptic number.

12121110122 is a deficient number, since it is larger than the sum of its proper divisors (7713433750).

12121110122 is a wasteful number, since it uses less digits than its factorization.

12121110122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550959564.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12121110122 its reverse (22101112121), we get a palindrome (34222222243).

The spelling of 12121110122 in words is "twelve billion, one hundred twenty-one million, one hundred ten thousand, one hundred twenty-two".