212220302244 has 24 divisors (see below), whose sum is σ = 501964004640. Its totient is φ = 69771057984.

The previous prime is 212220302221. The next prime is 212220302257. The reversal of 212220302244 is 442203022212.

It is a super-2 number, since 2×212220302244² (a number of 23 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 121129434 + ... + 121131185.

It is an arithmetic number, because the mean of its divisors is an integer number (20915166860).

Almost surely, 2^212220302244 is an apocalyptic number.

It is an amenable number.

212220302244 is an abundant number, since it is smaller than the sum of its proper divisors (289743702396).

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

212220302244 is a wasteful number, since it uses less digits than its factorization.

212220302244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242260699 (or 242260697 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 212220302244 its reverse (442203022212), we get a palindrome (654423324456).

The spelling of 212220302244 in words is "two hundred twelve billion, two hundred twenty million, three hundred two thousand, two hundred forty-four".