13121008 has 20 divisors (see below), whose sum is σ = 26917920. Its totient is φ = 6174464.

The previous prime is 13120999. The next prime is 13121033. The reversal of 13121008 is 80012131.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 13120982 and 13121000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23848 + ... + 24391.

It is an arithmetic number, because the mean of its divisors is an integer number (1345896).

Almost surely, 2^13121008 is an apocalyptic number.

It is an amenable number.

13121008 is an abundant number, since it is smaller than the sum of its proper divisors (13796912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13121008 is a wasteful number, since it uses less digits than its factorization.

13121008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48264 (or 48258 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 13121008 is about 3622.2931963053. The cubic root of 13121008 is about 235.8607816265.

Adding to 13121008 its reverse (80012131), we get a palindrome (93133139).

The spelling of 13121008 in words is "thirteen million, one hundred twenty-one thousand, eight".