12130312312220 has 96 divisors (see below), whose sum is σ = 26777969100288. Its totient is φ = 4606879318272.

The previous prime is 12130312312211. The next prime is 12130312312291. The reversal of 12130312312220 is 2221321303121.

12130312312220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12130312312220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59657567 + ... + 59860553.

It is an arithmetic number, because the mean of its divisors is an integer number (278937178128).

Almost surely, 2^{12130312312220} is an apocalyptic number.

12130312312220 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 12130312312220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13388984550144).

12130312312220 is an abundant number, since it is smaller than the sum of its proper divisors (14647656788068).

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

12130312312220 is a wasteful number, since it uses less digits than its factorization.

12130312312220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203979 (or 203977 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 12130312312220 its reverse (2221321303121), we get a palindrome (14351633615341).

The spelling of 12130312312220 in words is "twelve trillion, one hundred thirty billion, three hundred twelve million, three hundred twelve thousand, two hundred twenty".