12022011220 has 48 divisors (see below), whose sum is σ = 26615570688. Its totient is φ = 4552289280.

The previous prime is 12022011191. The next prime is 12022011233. The reversal of 12022011220 is 2211022021.

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 12022011220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90096 + ... + 179335.

It is an arithmetic number, because the mean of its divisors is an integer number (554491056).

Almost surely, 2^12022011220 is an apocalyptic number.

12022011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12022011220 is an abundant number, since it is smaller than the sum of its proper divisors (14593559468).

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

12022011220 is a wasteful number, since it uses less digits than its factorization.

12022011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269560 (or 269558 counting only the distinct ones).

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

Adding to 12022011220 its reverse (2211022021), we get a palindrome (14233033241).

The spelling of 12022011220 in words is "twelve billion, twenty-two million, eleven thousand, two hundred twenty".