12020211111321 has 48 divisors (see below), whose sum is σ = 20653743638528. Its totient is φ = 6843346074000.

The previous prime is 12020211111313. The next prime is 12020211111347. The reversal of 12020211111321 is 12311111202021.

It is a happy number.

12020211111321 is a `hidden beast` number, since 1 + 2 + 0 + 20 + 211 + 111 + 321 = 666.

It is not a de Polignac number, because 12020211111321 - 2³ = 12020211111313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12020211111294 and 12020211111303.

It is not an unprimeable number, because it can be changed into a prime (12020211111371) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12576955 + ... + 13498896.

Almost surely, 2^{12020211111321} is an apocalyptic number.

It is an amenable number.

12020211111321 is a deficient number, since it is larger than the sum of its proper divisors (8633532527207).

12020211111321 is an equidigital number, since it uses as much as digits as its factorization.

12020211111321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26076144 (or 26076132 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 12020211111321 its reverse (12311111202021), we get a palindrome (24331322313342).

The spelling of 12020211111321 in words is "twelve trillion, twenty billion, two hundred eleven million, one hundred eleven thousand, three hundred twenty-one".