212198029868 has 24 divisors (see below), whose sum is σ = 405117963264. Its totient is φ = 96450642000.

The previous prime is 212198029793. The next prime is 212198029913. The reversal of 212198029868 is 868920891212.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1987421 + ... + 2091467.

It is an arithmetic number, because the mean of its divisors is an integer number (16879915136).

Almost surely, 2^212198029868 is an apocalyptic number.

It is an amenable number.

212198029868 is a deficient number, since it is larger than the sum of its proper divisors (192919933396).

212198029868 is a wasteful number, since it uses less digits than its factorization.

212198029868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150413 (or 150411 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 56.

The spelling of 212198029868 in words is "two hundred twelve billion, one hundred ninety-eight million, twenty-nine thousand, eight hundred sixty-eight".