220522212 has 72 divisors (see below), whose sum is σ = 567665280. Its totient is φ = 72172800.

The previous prime is 220522207. The next prime is 220522217. The reversal of 220522212 is 212225022.

220522212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (220522207) and next prime (220522217).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220522217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 614089 + ... + 614447.

It is an arithmetic number, because the mean of its divisors is an integer number (7884240).

Almost surely, 2^220522212 is an apocalyptic number.

It is an amenable number.

220522212 is an abundant number, since it is smaller than the sum of its proper divisors (347143068).

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

220522212 is a wasteful number, since it uses less digits than its factorization.

220522212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 628 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 220522212 is about 14849.9903030271. The cubic root of 220522212 is about 604.1583470045.

Adding to 220522212 its reverse (212225022), we get a palindrome (432747234).

The spelling of 220522212 in words is "two hundred twenty million, five hundred twenty-two thousand, two hundred twelve".