13165420121200 has 30 divisors (see below), whose sum is σ = 31629921842144. Its totient is φ = 5266168048320.

The previous prime is 13165420121197. The next prime is 13165420121213. The reversal of 13165420121200 is 212102456131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16456774752 + ... + 16456775551.

Almost surely, 2^{13165420121200} is an apocalyptic number.

13165420121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13165420121200 is an abundant number, since it is smaller than the sum of its proper divisors (18464501720944).

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

13165420121200 is a wasteful number, since it uses less digits than its factorization.

13165420121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32913550321 (or 32913550310 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 13165420121200 its reverse (212102456131), we get a palindrome (13377522577331).

The spelling of 13165420121200 in words is "thirteen trillion, one hundred sixty-five billion, four hundred twenty million, one hundred twenty-one thousand, two hundred".