13281380421120 has 400 divisors, whose sum is σ = 54365386651488. Its totient is φ = 3035743764480.

The previous prime is 13281380420981. The next prime is 13281380421137. The reversal of 13281380421120 is 2112408318231.

13281380421120 is a `hidden beast` number, since 1 + 3 + 2 + 81 + 38 + 0 + 421 + 120 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 39 ways as a sum of consecutive naturals, for example, 3123471 + ... + 6026510.

Almost surely, 2^{13281380421120} is an apocalyptic number.

13281380421120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13281380421120 is an abundant number, since it is smaller than the sum of its proper divisors (41084006230368).

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

13281380421120 is an frugal number, since it uses more digits than its factorization.

13281380421120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9150023 (or 9149998 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

Adding to 13281380421120 its reverse (2112408318231), we get a palindrome (15393788739351).

The spelling of 13281380421120 in words is "thirteen trillion, two hundred eighty-one billion, three hundred eighty million, four hundred twenty-one thousand, one hundred twenty".