212021100198 has 48 divisors (see below), whose sum is σ = 462382830000. Its totient is φ = 70211930112.

The previous prime is 212021100173. The next prime is 212021100253. The reversal of 212021100198 is 891001120212.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8064178 + ... + 8090426.

It is an arithmetic number, because the mean of its divisors is an integer number (9632975625).

Almost surely, 2^212021100198 is an apocalyptic number.

212021100198 is an abundant number, since it is smaller than the sum of its proper divisors (250361729802).

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

212021100198 is a wasteful number, since it uses less digits than its factorization.

212021100198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29173 (or 29170 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The spelling of 212021100198 in words is "two hundred twelve billion, twenty-one million, one hundred thousand, one hundred ninety-eight".