12020112220 has 96 divisors (see below), whose sum is σ = 26178324480. Its totient is φ = 4633770240.

The previous prime is 12020112197. The next prime is 12020112227. The reversal of 12020112220 is 2221102021.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12020112220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020112227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25093941 + ... + 25094419.

It is an arithmetic number, because the mean of its divisors is an integer number (272690880).

Almost surely, 2^12020112220 is an apocalyptic number.

12020112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020112220 is an abundant number, since it is smaller than the sum of its proper divisors (14158212260).

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

12020112220 is a wasteful number, since it uses less digits than its factorization.

12020112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923 (or 921 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12020112220 its reverse (2221102021), we get a palindrome (14241214241).

The spelling of 12020112220 in words is "twelve billion, twenty million, one hundred twelve thousand, two hundred twenty".