13123412012 has 6 divisors (see below), whose sum is σ = 22965971028. Its totient is φ = 6561706004.

The previous prime is 13123412011. The next prime is 13123412149. The reversal of 13123412012 is 21021432131.

It is not an unprimeable number, because it can be changed into a prime (13123412011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1640426498 + ... + 1640426505.

It is an arithmetic number, because the mean of its divisors is an integer number (3827661838).

Almost surely, 2^13123412012 is an apocalyptic number.

It is an amenable number.

13123412012 is a deficient number, since it is larger than the sum of its proper divisors (9842559016).

13123412012 is a wasteful number, since it uses less digits than its factorization.

13123412012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3280853007 (or 3280853005 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 13123412012 its reverse (21021432131), we get a palindrome (34144844143).

The spelling of 13123412012 in words is "thirteen billion, one hundred twenty-three million, four hundred twelve thousand, twelve".