212110056 has 128 divisors (see below), whose sum is σ = 618710400. Its totient is φ = 67253760.

The previous prime is 212110001. The next prime is 212110079. The reversal of 212110056 is 650011212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 380530 + ... + 381086.

It is an arithmetic number, because the mean of its divisors is an integer number (4833675).

Almost surely, 2^212110056 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 212110056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309355200).

212110056 is an abundant number, since it is smaller than the sum of its proper divisors (406600344).

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

212110056 is a wasteful number, since it uses less digits than its factorization.

212110056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 646 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 212110056 is about 14563.9986267508. The cubic root of 212110056 is about 596.3763594385.

Adding to 212110056 its reverse (650011212), we get a palindrome (862121268).

The spelling of 212110056 in words is "two hundred twelve million, one hundred ten thousand, fifty-six".