212198930 has 16 divisors (see below), whose sum is σ = 404426520. Its totient is φ = 79886592.

The previous prime is 212198893. The next prime is 212198933. The reversal of 212198930 is 39891212.

It can be written as a sum of positive squares in 4 ways, for example, as 211906249 + 292681 = 14557^2 + 541^2 .

It is not an unprimeable number, because it can be changed into a prime (212198933) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 623945 + ... + 624284.

Almost surely, 2^212198930 is an apocalyptic number.

212198930 is a deficient number, since it is larger than the sum of its proper divisors (192227590).

212198930 is a wasteful number, since it uses less digits than its factorization.

212198930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248253.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 212198930 is about 14567.0494610268. The cubic root of 212198930 is about 596.4596415997.

The spelling of 212198930 in words is "two hundred twelve million, one hundred ninety-eight thousand, nine hundred thirty".