13121310052 has 12 divisors (see below), whose sum is σ = 22965280380. Its totient is φ = 6559801376.

The previous prime is 13121310049. The next prime is 13121310053. The reversal of 13121310052 is 25001312131.

It can be written as a sum of positive squares in 2 ways, for example, as 8138926656 + 4982383396 = 90216^2 + 70586^2 .

It is not an unprimeable number, because it can be changed into a prime (13121310053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178183 + ... + 240814.

It is an arithmetic number, because the mean of its divisors is an integer number (1913773365).

Almost surely, 2^13121310052 is an apocalyptic number.

It is an amenable number.

13121310052 is a deficient number, since it is larger than the sum of its proper divisors (9843970328).

13121310052 is a wasteful number, since it uses less digits than its factorization.

13121310052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426830 (or 426828 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

Adding to 13121310052 its reverse (25001312131), we get a palindrome (38122622183).

The spelling of 13121310052 in words is "thirteen billion, one hundred twenty-one million, three hundred ten thousand, fifty-two".