212818130 has 32 divisors (see below), whose sum is σ = 444341376. Its totient is φ = 71875584.

The previous prime is 212818093. The next prime is 212818139. The reversal of 212818130 is 31818212.

It is a self number, because there is not a number n which added to its sum of digits gives 212818130.

It is not an unprimeable number, because it can be changed into a prime (212818139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17999 + ... + 27378.

It is an arithmetic number, because the mean of its divisors is an integer number (13885668).

Almost surely, 2^212818130 is an apocalyptic number.

212818130 is an abundant number, since it is smaller than the sum of its proper divisors (231523246).

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

212818130 is a wasteful number, since it uses less digits than its factorization.

212818130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45458.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 212818130 is about 14588.2874251915. The cubic root of 212818130 is about 597.0392379191.

The spelling of 212818130 in words is "two hundred twelve million, eight hundred eighteen thousand, one hundred thirty".