12210221120 has 28 divisors (see below), whose sum is σ = 29075589804. Its totient is φ = 4884088320.

The previous prime is 12210221077. The next prime is 12210221129. The reversal of 12210221120 is 2112201221.

It can be written as a sum of positive squares in 2 ways, for example, as 1473945664 + 10736275456 = 38392^2 + 103616^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12210221095 and 12210221104.

It is not an unprimeable number, because it can be changed into a prime (12210221129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19078151 + ... + 19078790.

Almost surely, 2^12210221120 is an apocalyptic number.

12210221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12210221120 is an abundant number, since it is smaller than the sum of its proper divisors (16865368684).

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

12210221120 is an equidigital number, since it uses as much as digits as its factorization.

12210221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38156958 (or 38156948 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12210221120 its reverse (2112201221), we get a palindrome (14322422341).

The spelling of 12210221120 in words is "twelve billion, two hundred ten million, two hundred twenty-one thousand, one hundred twenty".