12020323001220 has 72 divisors (see below), whose sum is σ = 36462006171864. Its totient is φ = 3205387842048.

The previous prime is 12020323001191. The next prime is 12020323001299. The reversal of 12020323001220 is 2210032302021.

12020323001220 is a `hidden beast` number, since 12 + 0 + 203 + 230 + 0 + 1 + 220 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 682933654404 + 11337389346816 = 826398^2 + 3367104^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12020323001193 and 12020323001202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22254192 + ... + 22787928.

It is an arithmetic number, because the mean of its divisors is an integer number (506416752387).

Almost surely, 2^{12020323001220} is an apocalyptic number.

12020323001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020323001220 is an abundant number, since it is smaller than the sum of its proper divisors (24441683170644).

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

12020323001220 is a wasteful number, since it uses less digits than its factorization.

12020323001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658869 (or 658864 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12020323001220 its reverse (2210032302021), we get a palindrome (14230355303241).

The spelling of 12020323001220 in words is "twelve trillion, twenty billion, three hundred twenty-three million, one thousand, two hundred twenty".