12220212012 has 48 divisors (see below), whose sum is σ = 28890946560. Its totient is φ = 4019588352.

The previous prime is 12220211987. The next prime is 12220212049. The reversal of 12220212012 is 21021202221.

It is a junction number, because it is equal to n+sod(n) for n = 12220211982 and 12220212000.

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, 3047713 + ... + 3051719.

It is an arithmetic number, because the mean of its divisors is an integer number (601894720).

Almost surely, 2^12220212012 is an apocalyptic number.

12220212012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12220212012 is an abundant number, since it is smaller than the sum of its proper divisors (16670734548).

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

12220212012 is a wasteful number, since it uses less digits than its factorization.

12220212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7310 (or 7308 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12220212012 its reverse (21021202221), we get a palindrome (33241414233).

The spelling of 12220212012 in words is "twelve billion, two hundred twenty million, two hundred twelve thousand, twelve".