2012122220 has 24 divisors (see below), whose sum is σ = 4323724944. Its totient is φ = 786131136.

The previous prime is 2012122199. The next prime is 2012122223. The reversal of 2012122220 is 222212102.

It is a junction number, because it is equal to n+sod(n) for n = 2012122195 and 2012122204.

It is not an unprimeable number, because it can be changed into a prime (2012122223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1168979 + ... + 1170698.

It is an arithmetic number, because the mean of its divisors is an integer number (180155206).

Almost surely, 2^2012122220 is an apocalyptic number.

2012122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012122220 is an abundant number, since it is smaller than the sum of its proper divisors (2311602724).

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

2012122220 is a wasteful number, since it uses less digits than its factorization.

2012122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339729 (or 2339727 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2012122220 is about 44856.6853434357. The cubic root of 2012122220 is about 1262.4614309689.

Adding to 2012122220 its reverse (222212102), we get a palindrome (2234334322).

The spelling of 2012122220 in words is "two billion, twelve million, one hundred twenty-two thousand, two hundred twenty".