212198012 has 24 divisors (see below), whose sum is σ = 423437616. Its totient is φ = 92176128.

The previous prime is 212198009. The next prime is 212198027. The reversal of 212198012 is 210891212.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119138 + ... + 120905.

It is an arithmetic number, because the mean of its divisors is an integer number (17643234).

Almost surely, 2^212198012 is an apocalyptic number.

It is an amenable number.

212198012 is a deficient number, since it is larger than the sum of its proper divisors (211239604).

212198012 is a wasteful number, since it uses less digits than its factorization.

212198012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240077 (or 240075 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 212198012 is about 14567.0179515232. The cubic root of 212198012 is about 596.4587814779.

The spelling of 212198012 in words is "two hundred twelve million, one hundred ninety-eight thousand, twelve".