212711056 has 40 divisors (see below), whose sum is σ = 427707000. Its totient is φ = 102359040.

The previous prime is 212711047. The next prime is 212711063. The reversal of 212711056 is 650117212.

212711056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 49280400 + 163430656 = 7020^2 + 12784^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212711056.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207826 + ... + 208846.

It is an arithmetic number, because the mean of its divisors is an integer number (10692675).

Almost surely, 2^212711056 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 212711056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213853500).

212711056 is an abundant number, since it is smaller than the sum of its proper divisors (214995944).

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

212711056 is a wasteful number, since it uses less digits than its factorization.

212711056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507 (or 1501 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 212711056 is about 14584.6171015903. The cubic root of 212711056 is about 596.9390927803.

Adding to 212711056 its reverse (650117212), we get a palindrome (862828268).

The spelling of 212711056 in words is "two hundred twelve million, seven hundred eleven thousand, fifty-six".