12121110106 has 48 divisors (see below), whose sum is σ = 22105477800. Its totient is φ = 4963811328.

The previous prime is 12121110061. The next prime is 12121110137. The reversal of 12121110106 is 60101112121.

It can be written as a sum of positive squares in 4 ways, for example, as 10932584481 + 1188525625 = 104559^2 + 34475^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 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 23 ways as a sum of consecutive naturals, for example, 253690 + ... + 297658.

Almost surely, 2^12121110106 is an apocalyptic number.

12121110106 is a deficient number, since it is larger than the sum of its proper divisors (9984367694).

12121110106 is a wasteful number, since it uses less digits than its factorization.

12121110106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44111 (or 44104 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 12121110106 its reverse (60101112121), we get a palindrome (72222222227).

The spelling of 12121110106 in words is "twelve billion, one hundred twenty-one million, one hundred ten thousand, one hundred six".