212512056 has 16 divisors (see below), whose sum is σ = 531280200. Its totient is φ = 70837344.

The previous prime is 212512049. The next prime is 212512057. The reversal of 212512056 is 650215212.

It is a happy number.

212512056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212512056² = 90322747890694272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 8854669 = 212512056 / (2 + 1 + 2 + 5 + 1 + 2 + 0 + 5 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212512057) 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, 4427311 + ... + 4427358.

Almost surely, 2^212512056 is an apocalyptic number.

It is an amenable number.

212512056 is an abundant number, since it is smaller than the sum of its proper divisors (318768144).

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

212512056 is a wasteful number, since it uses less digits than its factorization.

212512056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8854678 (or 8854674 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 212512056 is about 14577.7932486368. The cubic root of 212512056 is about 596.7528809529.

Adding to 212512056 its reverse (650215212), we get a palindrome (862727268).

The spelling of 212512056 in words is "two hundred twelve million, five hundred twelve thousand, fifty-six".