220220312 has 64 divisors (see below), whose sum is σ = 473558400. Its totient is φ = 95439360.

The previous prime is 220220303. The next prime is 220220323. The reversal of 220220312 is 213022022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510737 + ... + 511167.

It is an arithmetic number, because the mean of its divisors is an integer number (7399350).

Almost surely, 2^220220312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220220312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236779200).

220220312 is an abundant number, since it is smaller than the sum of its proper divisors (253338088).

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

220220312 is a wasteful number, since it uses less digits than its factorization.

220220312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 220220312 is about 14839.8218318146. The cubic root of 220220312 is about 603.8825188522.

Adding to 220220312 its reverse (213022022), we get a palindrome (433242334).

The spelling of 220220312 in words is "two hundred twenty million, two hundred twenty thousand, three hundred twelve".