12220122220 has 24 divisors (see below), whose sum is σ = 25709194224. Its totient is φ = 4879108416.

The previous prime is 12220122197. The next prime is 12220122259. The reversal of 12220122220 is 2222102221.

It is a junction number, because it is equal to n+sod(n) for n = 12220122194 and 12220122203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 547567 + ... + 569446.

It is an arithmetic number, because the mean of its divisors is an integer number (1071216426).

Almost surely, 2^12220122220 is an apocalyptic number.

12220122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12220122220 is an abundant number, since it is smaller than the sum of its proper divisors (13489072004).

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

12220122220 is a wasteful number, since it uses less digits than its factorization.

12220122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117569 (or 1117567 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12220122220 its reverse (2222102221), we get a palindrome (14442224441).

The spelling of 12220122220 in words is "twelve billion, two hundred twenty million, one hundred twenty-two thousand, two hundred twenty".