212112022220 has 72 divisors (see below), whose sum is σ = 525257619264. Its totient is φ = 71727876864.

The previous prime is 212112022193. The next prime is 212112022223. The reversal of 212112022220 is 22220211212.

It is a happy number.

212112022220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212112022223) 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 23 ways as a sum of consecutive naturals, for example, 1410932 + ... + 1554011.

It is an arithmetic number, because the mean of its divisors is an integer number (7295244712).

Almost surely, 2^212112022220 is an apocalyptic number.

212112022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212112022220 is an abundant number, since it is smaller than the sum of its proper divisors (313145597044).

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

212112022220 is a wasteful number, since it uses less digits than its factorization.

212112022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965039 (or 2965030 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212112022220 its reverse (22220211212), we get a palindrome (234332233432).

The spelling of 212112022220 in words is "two hundred twelve billion, one hundred twelve million, twenty-two thousand, two hundred twenty".