212262210 has 48 divisors (see below), whose sum is σ = 555572160. Its totient is φ = 56224800.

The previous prime is 212262209. The next prime is 212262217. The reversal of 212262210 is 12262212.

212262210 is a `hidden beast` number, since 21 + 22 + 622 + 1 + 0 = 666.

212262210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (212262217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5781 + ... + 21399.

It is an arithmetic number, because the mean of its divisors is an integer number (11574420).

Almost surely, 2^212262210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212262210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277786080).

212262210 is an abundant number, since it is smaller than the sum of its proper divisors (343309950).

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

212262210 is a wasteful number, since it uses less digits than its factorization.

212262210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15783 (or 15780 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 212262210 is about 14569.2213244222. The cubic root of 212262210 is about 596.5189259308.

It can be divided in two parts, 21226 and 2210, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 212262210 in words is "two hundred twelve million, two hundred sixty-two thousand, two hundred ten".