12020020221220 has 192 divisors, whose sum is σ = 27989021491200. Its totient is φ = 4299682083840.

The previous prime is 12020020221091. The next prime is 12020020221233. The reversal of 12020020221220 is 2212202002021.

It is a super-2 number, since 2×12020020221220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12020020221194 and 12020020221203.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6833438701 + ... + 6833440459.

It is an arithmetic number, because the mean of its divisors is an integer number (145776153600).

Almost surely, 2^{12020020221220} is an apocalyptic number.

12020020221220 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 12020020221220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13994510745600).

12020020221220 is an abundant number, since it is smaller than the sum of its proper divisors (15969001269980).

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

12020020221220 is a wasteful number, since it uses less digits than its factorization.

12020020221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3458 (or 3456 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12020020221220 its reverse (2212202002021), we get a palindrome (14232222223241).

The spelling of 12020020221220 in words is "twelve trillion, twenty billion, twenty million, two hundred twenty-one thousand, two hundred twenty".