12022022220 has 96 divisors (see below), whose sum is σ = 36368317440. Its totient is φ = 2949692160.

The previous prime is 12022022179. The next prime is 12022022231. The reversal of 12022022220 is 2222022021.

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 12022022220.

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, 217801 + ... + 267359.

It is an arithmetic number, because the mean of its divisors is an integer number (378836640).

Almost surely, 2^12022022220 is an apocalyptic number.

12022022220 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 12022022220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18184158720).

12022022220 is an abundant number, since it is smaller than the sum of its proper divisors (24346295220).

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

12022022220 is a wasteful number, since it uses less digits than its factorization.

12022022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49895 (or 49893 counting only the distinct ones).

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

Adding to 12022022220 its reverse (2222022021), we get a palindrome (14244044241).

The spelling of 12022022220 in words is "twelve billion, twenty-two million, twenty-two thousand, two hundred twenty".