13012421008 has 20 divisors (see below), whose sum is σ = 25223815260. Its totient is φ = 6503049344.

The previous prime is 13012420991. The next prime is 13012421011. The reversal of 13012421008 is 80012421031.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1783203984 + 11229217024 = 42228^2 + 105968^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13012421008.

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, 163435 + ... + 229642.

It is an arithmetic number, because the mean of its divisors is an integer number (1261190763).

Almost surely, 2^13012421008 is an apocalyptic number.

It is an amenable number.

13012421008 is a deficient number, since it is larger than the sum of its proper divisors (12211394252).

13012421008 is a wasteful number, since it uses less digits than its factorization.

13012421008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395154 (or 395148 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 13012421008 its reverse (80012421031), we get a palindrome (93024842039).

The spelling of 13012421008 in words is "thirteen billion, twelve million, four hundred twenty-one thousand, eight".