220020312 has 16 divisors (see below), whose sum is σ = 550050840. Its totient is φ = 73340096.

The previous prime is 220020289. The next prime is 220020313. The reversal of 220020312 is 213020022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220020313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4583733 + ... + 4583780.

Almost surely, 2^220020312 is an apocalyptic number.

It is an amenable number.

220020312 is an abundant number, since it is smaller than the sum of its proper divisors (330030528).

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

220020312 is a wasteful number, since it uses less digits than its factorization.

220020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9167522 (or 9167518 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 220020312 is about 14833.0816757679. The cubic root of 220020312 is about 603.6996518504.

Adding to 220020312 its reverse (213020022), we get a palindrome (433040334).

The spelling of 220020312 in words is "two hundred twenty million, twenty thousand, three hundred twelve".