216130212 has 36 divisors (see below), whose sum is σ = 559038480. Its totient is φ = 70367472.

The previous prime is 216130199. The next prime is 216130249. The reversal of 216130212 is 212031612.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68262 + ... + 71357.

Almost surely, 2^216130212 is an apocalyptic number.

It is an amenable number.

216130212 is an abundant number, since it is smaller than the sum of its proper divisors (342908268).

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

216130212 is a wasteful number, since it uses less digits than its factorization.

216130212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139672 (or 139667 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 216130212 is about 14701.3676914769. The cubic root of 216130212 is about 600.1205424476.

Adding to 216130212 its reverse (212031612), we get a palindrome (428161824).

The spelling of 216130212 in words is "two hundred sixteen million, one hundred thirty thousand, two hundred twelve".