12020222220 has 96 divisors (see below), whose sum is σ = 34266758400. Its totient is φ = 3147412224.

The previous prime is 12020222219. The next prime is 12020222233. The reversal of 12020222220 is 2222202021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12020222220.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4519251 + ... + 4521909.

It is an arithmetic number, because the mean of its divisors is an integer number (356945400).

Almost surely, 2^12020222220 is an apocalyptic number.

12020222220 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 12020222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17133379200).

12020222220 is an abundant number, since it is smaller than the sum of its proper divisors (22246536180).

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

12020222220 is a wasteful number, since it uses less digits than its factorization.

12020222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007 (or 4005 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 12020222220 its reverse (2222202021), we get a palindrome (14242424241).

The spelling of 12020222220 in words is "twelve billion, twenty million, two hundred twenty-two thousand, two hundred twenty".