212102130 has 128 divisors (see below), whose sum is σ = 561427200. Its totient is φ = 51093504.

The previous prime is 212102089. The next prime is 212102153. The reversal of 212102130 is 31201212.

212102130 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1876954 + ... + 1877066.

It is an arithmetic number, because the mean of its divisors is an integer number (4386150).

Almost surely, 2^212102130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212102130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280713600).

212102130 is an abundant number, since it is smaller than the sum of its proper divisors (349325070).

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

212102130 is a wasteful number, since it uses less digits than its factorization.

212102130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 212102130 is about 14563.7265148725. The cubic root of 212102130 is about 596.3689310025.

Adding to 212102130 its reverse (31201212), we get a palindrome (243303342).

The spelling of 212102130 in words is "two hundred twelve million, one hundred two thousand, one hundred thirty".