12121212134 has 4 divisors (see below), whose sum is σ = 18181818204. Its totient is φ = 6060606066.

The previous prime is 12121212121. The next prime is 12121212139. The reversal of 12121212134 is 43121212121.

12121212134 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 is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121212139) 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, 3030303032 + ... + 3030303035.

It is an arithmetic number, because the mean of its divisors is an integer number (4545454551).

Almost surely, 2^12121212134 is an apocalyptic number.

12121212134 is a deficient number, since it is larger than the sum of its proper divisors (6060606070).

12121212134 is an equidigital number, since it uses as much as digits as its factorization.

12121212134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060606069.

The product of its digits is 192, while the sum is 20.

Adding to 12121212134 its reverse (43121212121), we get a palindrome (55242424255).

The spelling of 12121212134 in words is "twelve billion, one hundred twenty-one million, two hundred twelve thousand, one hundred thirty-four".