12130400312320 has 88 divisors (see below), whose sum is σ = 29107413838944. Its totient is φ = 4850714689536.

The previous prime is 12130400312269. The next prime is 12130400312321. The reversal of 12130400312320 is 2321300403121.

It is a super-2 number, since 2×12130400312320² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12130400312291 and 12130400312300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12130400312321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16918557 + ... + 17620963.

Almost surely, 2^{12130400312320} is an apocalyptic number.

12130400312320 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 12130400312320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14553706919472).

12130400312320 is an abundant number, since it is smaller than the sum of its proper divisors (16977013526624).

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

12130400312320 is an equidigital number, since it uses as much as digits as its factorization.

12130400312320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705805 (or 705787 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 12130400312320 its reverse (2321300403121), we get a palindrome (14451700715441).

The spelling of 12130400312320 in words is "twelve trillion, one hundred thirty billion, four hundred million, three hundred twelve thousand, three hundred twenty".