12021020222220 has 288 divisors, whose sum is σ = 38200904501760. Its totient is φ = 3054026511360.

The previous prime is 12021020222209. The next prime is 12021020222261. The reversal of 12021020222220 is 2222202012021.

12021020222220 is a `hidden beast` number, since 1 + 202 + 1 + 0 + 20 + 222 + 220 = 666.

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 = 12021020222193 and 12021020222202.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1103954536 + ... + 1103965424.

It is an arithmetic number, because the mean of its divisors is an integer number (132642029520).

Almost surely, 2^{12021020222220} is an apocalyptic number.

12021020222220 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 12021020222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19100452250880).

12021020222220 is an abundant number, since it is smaller than the sum of its proper divisors (26179884279540).

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

12021020222220 is a wasteful number, since it uses less digits than its factorization.

12021020222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11965 (or 11960 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 12021020222220 its reverse (2222202012021), we get a palindrome (14243222234241).

The spelling of 12021020222220 in words is "twelve trillion, twenty-one billion, twenty million, two hundred twenty-two thousand, two hundred twenty".