212020056 has 48 divisors (see below), whose sum is σ = 608002200. Its totient is φ = 66515712.

The previous prime is 212020051. The next prime is 212020063. The reversal of 212020056 is 650020212.

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 (212020051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85386 + ... + 87833.

Almost surely, 2^212020056 is an apocalyptic number.

It is an amenable number.

212020056 is an abundant number, since it is smaller than the sum of its proper divisors (395982144).

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

212020056 is a wasteful number, since it uses less digits than its factorization.

212020056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173248 (or 173241 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 212020056 is about 14560.9084881404. The cubic root of 212020056 is about 596.2919984129.

Adding to 212020056 its reverse (650020212), we get a palindrome (862040268).

The spelling of 212020056 in words is "two hundred twelve million, twenty thousand, fifty-six".