12222002220 has 48 divisors (see below), whose sum is σ = 34801643520. Its totient is φ = 3203958976.

The previous prime is 12222002209. The next prime is 12222002227. The reversal of 12222002220 is 2220022221.

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 12222002220.

It is not an unprimeable number, because it can be changed into a prime (12222002227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1722732 + ... + 1729811.

It is an arithmetic number, because the mean of its divisors is an integer number (725034240).

Almost surely, 2^12222002220 is an apocalyptic number.

12222002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222002220 is an abundant number, since it is smaller than the sum of its proper divisors (22579641300).

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

12222002220 is a wasteful number, since it uses less digits than its factorization.

12222002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3452614 (or 3452612 counting only the distinct ones).

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

Adding to 12222002220 its reverse (2220022221), we get a palindrome (14442024441).

The spelling of 12222002220 in words is "twelve billion, two hundred twenty-two million, two thousand, two hundred twenty".