12020110021220 has 120 divisors (see below), whose sum is σ = 29453442153408. Its totient is φ = 4120351435200.

The previous prime is 12020110021181. The next prime is 12020110021223. The reversal of 12020110021220 is 2212001102021.

12020110021220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 12020110021195 and 12020110021204.

It is not an unprimeable number, because it can be changed into a prime (12020110021223) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 268457435 + ... + 268502205.

Almost surely, 2^{12020110021220} is an apocalyptic number.

12020110021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12020110021220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14726721076704).

12020110021220 is an abundant number, since it is smaller than the sum of its proper divisors (17433332132188).

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

12020110021220 is an equidigital number, since it uses as much as digits as its factorization.

12020110021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50399 (or 50376 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12020110021220 its reverse (2212001102021), we get a palindrome (14232111123241).

The spelling of 12020110021220 in words is "twelve trillion, twenty billion, one hundred ten million, twenty-one thousand, two hundred twenty".