13121312202 has 64 divisors (see below), whose sum is σ = 29630448000. Its totient is φ = 4303532160.

The previous prime is 13121312179. The next prime is 13121312203. The reversal of 13121312202 is 20221312131.

13121312202 is a `hidden beast` number, since 1 + 312 + 131 + 220 + 2 = 666.

13121312202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (13121312203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 853302 + ... + 868542.

It is an arithmetic number, because the mean of its divisors is an integer number (462975750).

Almost surely, 2^13121312202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13121312202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14815224000).

13121312202 is an abundant number, since it is smaller than the sum of its proper divisors (16509135798).

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

13121312202 is a wasteful number, since it uses less digits than its factorization.

13121312202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15508 (or 15502 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13121312202 its reverse (20221312131), we get a palindrome (33342624333).

The spelling of 13121312202 in words is "thirteen billion, one hundred twenty-one million, three hundred twelve thousand, two hundred two".