13121243234 has 16 divisors (see below), whose sum is σ = 21765252960. Its totient is φ = 5882499360.

The previous prime is 13121243209. The next prime is 13121243237. The reversal of 13121243234 is 43234212131.

It is not an unprimeable number, because it can be changed into a prime (13121243237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4083464 + ... + 4086675.

It is an arithmetic number, because the mean of its divisors is an integer number (1360328310).

Almost surely, 2^13121243234 is an apocalyptic number.

13121243234 is a deficient number, since it is larger than the sum of its proper divisors (8644009726).

13121243234 is a wasteful number, since it uses less digits than its factorization.

13121243234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8170225.

The product of its digits is 3456, while the sum is 26.

Adding to 13121243234 its reverse (43234212131), we get a palindrome (56355455365).

The spelling of 13121243234 in words is "thirteen billion, one hundred twenty-one million, two hundred forty-three thousand, two hundred thirty-four".