13185202121204 has 24 divisors (see below), whose sum is σ = 23830031866368. Its totient is φ = 6376828770720.

The previous prime is 13185202121191. The next prime is 13185202121207. The reversal of 13185202121204 is 40212120258131.

It is a super-2 number, since 2×13185202121204² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13185202121207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25642232 + ... + 26151375.

It is an arithmetic number, because the mean of its divisors is an integer number (992917994432).

Almost surely, 2^{13185202121204} is an apocalyptic number.

It is an amenable number.

13185202121204 is a deficient number, since it is larger than the sum of its proper divisors (10644829745164).

13185202121204 is a wasteful number, since it uses less digits than its factorization.

13185202121204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51795695 (or 51795693 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

Adding to 13185202121204 its reverse (40212120258131), we get a palindrome (53397322379335).

The spelling of 13185202121204 in words is "thirteen trillion, one hundred eighty-five billion, two hundred two million, one hundred twenty-one thousand, two hundred four".