12312320201220 has 96 divisors (see below), whose sum is σ = 37160227052928. Its totient is φ = 3027962022912.

The previous prime is 12312320201213. The next prime is 12312320201239. The reversal of 12312320201220 is 2210202321321.

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, 6338974 + ... + 8050293.

It is an arithmetic number, because the mean of its divisors is an integer number (387085698468).

Almost surely, 2^{12312320201220} is an apocalyptic number.

12312320201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12312320201220 is an abundant number, since it is smaller than the sum of its proper divisors (24847906851708).

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

12312320201220 is a wasteful number, since it uses less digits than its factorization.

12312320201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14390389 (or 14390387 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12312320201220 its reverse (2210202321321), we get a palindrome (14522522522541).

The spelling of 12312320201220 in words is "twelve trillion, three hundred twelve billion, three hundred twenty million, two hundred one thousand, two hundred twenty".