212213130 has 64 divisors (see below), whose sum is σ = 535949568. Its totient is φ = 53706240.

The previous prime is 212213129. The next prime is 212213143. The reversal of 212213130 is 31312212.

It is a super-3 number, since 3×212213130³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 31 ways as a sum of consecutive naturals, for example, 43179 + ... + 47841.

It is an arithmetic number, because the mean of its divisors is an integer number (8374212).

Almost surely, 2^212213130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212213130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267974784).

212213130 is an abundant number, since it is smaller than the sum of its proper divisors (323736438).

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

212213130 is a wasteful number, since it uses less digits than its factorization.

212213130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4751.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 212213130 is about 14567.5368542523. The cubic root of 212213130 is about 596.4729459991.

Adding to 212213130 its reverse (31312212), we get a palindrome (243525342).

The spelling of 212213130 in words is "two hundred twelve million, two hundred thirteen thousand, one hundred thirty".