12012002221220 has 72 divisors (see below), whose sum is σ = 27198439111872. Its totient is φ = 4447641612480.

The previous prime is 12012002221211. The next prime is 12012002221231. The reversal of 12012002221220 is 2212220021021.

It is a happy number.

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, 13144334 + ... + 14028453.

It is an arithmetic number, because the mean of its divisors is an integer number (377756098776).

Almost surely, 2^{12012002221220} is an apocalyptic number.

12012002221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012002221220 is an abundant number, since it is smaller than the sum of its proper divisors (15186436890652).

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

12012002221220 is a wasteful number, since it uses less digits than its factorization.

12012002221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27172881 (or 27172848 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12012002221220 its reverse (2212220021021), we get a palindrome (14224222242241).

The spelling of 12012002221220 in words is "twelve trillion, twelve billion, two million, two hundred twenty-one thousand, two hundred twenty".