12121101106 has 4 divisors (see below), whose sum is σ = 18181651662. Its totient is φ = 6060550552.

The previous prime is 12121101101. The next prime is 12121101191. The reversal of 12121101106 is 60110112121.

12121101106 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., 11828520081 + 292581025 = 108759^2 + 17105^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12121101106.

It is not an unprimeable number, because it can be changed into a prime (12121101101) by changing a digit.

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, 3030275275 + ... + 3030275278.

Almost surely, 2^12121101106 is an apocalyptic number.

12121101106 is a deficient number, since it is larger than the sum of its proper divisors (6060550556).

12121101106 is an equidigital number, since it uses as much as digits as its factorization.

12121101106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060550555.

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

Adding to 12121101106 its reverse (60110112121), we get a palindrome (72231213227).

The spelling of 12121101106 in words is "twelve billion, one hundred twenty-one million, one hundred one thousand, one hundred six".