212212302220 has 24 divisors (see below), whose sum is σ = 446151712608. Its totient is φ = 84788563200.

The previous prime is 212212302209. The next prime is 212212302223. The reversal of 212212302220 is 22203212212.

It is a super-2 number, since 2×212212302220² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212212302223) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6004296 + ... + 6039535.

It is an arithmetic number, because the mean of its divisors is an integer number (18589654692).

Almost surely, 2^212212302220 is an apocalyptic number.

212212302220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212212302220 is an abundant number, since it is smaller than the sum of its proper divisors (233939410388).

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

212212302220 is a wasteful number, since it uses less digits than its factorization.

212212302220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12044721 (or 12044719 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 212212302220 its reverse (22203212212), we get a palindrome (234415514432).

The spelling of 212212302220 in words is "two hundred twelve billion, two hundred twelve million, three hundred two thousand, two hundred twenty".