212201022194 has 24 divisors (see below), whose sum is σ = 380276410860. Its totient is φ = 88485366816.

The previous prime is 212201022193. The next prime is 212201022203. The reversal of 212201022194 is 491220102212.

It can be written as a sum of positive squares in 2 ways, for example, as 203125983025 + 9075039169 = 450695^2 + 95263^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212201022191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29257409 + ... + 29264660.

Almost surely, 2^212201022194 is an apocalyptic number.

212201022194 is a deficient number, since it is larger than the sum of its proper divisors (168075388666).

212201022194 is a wasteful number, since it uses less digits than its factorization.

212201022194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58522122 (or 58522115 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 212201022194 in words is "two hundred twelve billion, two hundred one million, twenty-two thousand, one hundred ninety-four".