220012021212 has 12 divisors (see below), whose sum is σ = 513361382856. Its totient is φ = 73337340400.

The previous prime is 220012021189. The next prime is 220012021213. The reversal of 220012021212 is 212120210022.

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 = 220012021191 and 220012021200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220012021213) 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, 9167167539 + ... + 9167167562.

It is an arithmetic number, because the mean of its divisors is an integer number (42780115238).

Almost surely, 2^220012021212 is an apocalyptic number.

It is an amenable number.

220012021212 is an abundant number, since it is smaller than the sum of its proper divisors (293349361644).

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

220012021212 is a wasteful number, since it uses less digits than its factorization.

220012021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18334335108 (or 18334335106 counting only the distinct ones).

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

Adding to 220012021212 its reverse (212120210022), we get a palindrome (432132231234).

The spelling of 220012021212 in words is "two hundred twenty billion, twelve million, twenty-one thousand, two hundred twelve".