13121012708 has 12 divisors (see below), whose sum is σ = 22971211452. Its totient is φ = 6557809440.

The previous prime is 13121012687. The next prime is 13121012711. The reversal of 13121012708 is 80721012131.

It can be written as a sum of positive squares in 2 ways, for example, as 7461158884 + 5659853824 = 86378^2 + 75232^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663263 + ... + 682758.

It is an arithmetic number, because the mean of its divisors is an integer number (1914267621).

Almost surely, 2^13121012708 is an apocalyptic number.

It is an amenable number.

13121012708 is a deficient number, since it is larger than the sum of its proper divisors (9850198744).

13121012708 is a wasteful number, since it uses less digits than its factorization.

13121012708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348462 (or 1348460 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 26.

Adding to 13121012708 its reverse (80721012131), we get a palindrome (93842024839).

The spelling of 13121012708 in words is "thirteen billion, one hundred twenty-one million, twelve thousand, seven hundred eight".