12305312120 has 32 divisors (see below), whose sum is σ = 27776005920. Its totient is φ = 4906293120.

The previous prime is 12305312101. The next prime is 12305312177. The reversal of 12305312120 is 2121350321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12305312092 and 12305312101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482147 + ... + 507026.

It is an arithmetic number, because the mean of its divisors is an integer number (868000185).

Almost surely, 2^12305312120 is an apocalyptic number.

12305312120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12305312120 is an abundant number, since it is smaller than the sum of its proper divisors (15470693800).

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

12305312120 is a wasteful number, since it uses less digits than its factorization.

12305312120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989495 (or 989491 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 12305312120 its reverse (2121350321), we get a palindrome (14426662441).

The spelling of 12305312120 in words is "twelve billion, three hundred five million, three hundred twelve thousand, one hundred twenty".