12312310210220 has 24 divisors (see below), whose sum is σ = 25856257707504. Its totient is φ = 4924846700096.

The previous prime is 12312310210177. The next prime is 12312310210259. The reversal of 12312310210220 is 2201201321321.

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 = 12312310210192 and 12312310210201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3523127 + ... + 6085806.

It is an arithmetic number, because the mean of its divisors is an integer number (1077344071146).

Almost surely, 2^{12312310210220} is an apocalyptic number.

12312310210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12312310210220 is an abundant number, since it is smaller than the sum of its proper divisors (13543947497284).

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

12312310210220 is a wasteful number, since it uses less digits than its factorization.

12312310210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9673009 (or 9673007 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12312310210220 its reverse (2201201321321), we get a palindrome (14513511531541).

The spelling of 12312310210220 in words is "twelve trillion, three hundred twelve billion, three hundred ten million, two hundred ten thousand, two hundred twenty".