220220011212 has 12 divisors (see below), whose sum is σ = 513846692856. Its totient is φ = 73406670400.

The previous prime is 220220011189. The next prime is 220220011237. The reversal of 220220011212 is 212110022022.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 220220011191 and 220220011200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9175833789 + ... + 9175833812.

It is an arithmetic number, because the mean of its divisors is an integer number (42820557738).

Almost surely, 2^220220011212 is an apocalyptic number.

It is an amenable number.

220220011212 is an abundant number, since it is smaller than the sum of its proper divisors (293626681644).

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

220220011212 is a wasteful number, since it uses less digits than its factorization.

220220011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18351667608 (or 18351667606 counting only the distinct ones).

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

Adding to 220220011212 its reverse (212110022022), we get a palindrome (432330033234).

The spelling of 220220011212 in words is "two hundred twenty billion, two hundred twenty million, eleven thousand, two hundred twelve".