12013121312320 has 112 divisors (see below), whose sum is σ = 29282178233088. Its totient is φ = 4691787448320.

The previous prime is 12013121312303. The next prime is 12013121312351. The reversal of 12013121312320 is 2321312131021.

It is a junction number, because it is equal to n+sod(n) for n = 12013121312291 and 12013121312300.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37916160 + ... + 38231680.

Almost surely, 2^{12013121312320} is an apocalyptic number.

12013121312320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12013121312320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14641089116544).

12013121312320 is an abundant number, since it is smaller than the sum of its proper divisors (17269056920768).

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

12013121312320 is a wasteful number, since it uses less digits than its factorization.

12013121312320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318348 (or 318338 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12013121312320 its reverse (2321312131021), we get a palindrome (14334433443341).

The spelling of 12013121312320 in words is "twelve trillion, thirteen billion, one hundred twenty-one million, three hundred twelve thousand, three hundred twenty".