212221321198 has 4 divisors (see below), whose sum is σ = 318331981800. Its totient is φ = 106110660598.

The previous prime is 212221321189. The next prime is 212221321217. The reversal of 212221321198 is 891123122212.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53055330298 + ... + 53055330301.

It is an arithmetic number, because the mean of its divisors is an integer number (79582995450).

Almost surely, 2^212221321198 is an apocalyptic number.

212221321198 is a deficient number, since it is larger than the sum of its proper divisors (106110660602).

212221321198 is a wasteful number, since it uses less digits than its factorization.

212221321198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106110660601.

The product of its digits is 6912, while the sum is 34.

The spelling of 212221321198 in words is "two hundred twelve billion, two hundred twenty-one million, three hundred twenty-one thousand, one hundred ninety-eight".