12121340434 has 32 divisors (see below), whose sum is σ = 22381793280. Its totient is φ = 4806989712.

The previous prime is 12121340417. The next prime is 12121340449. The reversal of 12121340434 is 43404312121.

It is a junction number, because it is equal to n+sod(n) for n = 12121340399 and 12121340408.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 518434 + ... + 541309.

It is an arithmetic number, because the mean of its divisors is an integer number (699431040).

Almost surely, 2^12121340434 is an apocalyptic number.

12121340434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12121340434 is a deficient number, since it is larger than the sum of its proper divisors (10260452846).

12121340434 is a wasteful number, since it uses less digits than its factorization.

12121340434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059814.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 12121340434 its reverse (43404312121), we get a palindrome (55525652555).

The spelling of 12121340434 in words is "twelve billion, one hundred twenty-one million, three hundred forty thousand, four hundred thirty-four".