212021122194 has 48 divisors (see below), whose sum is σ = 526390038720. Its totient is φ = 60417614880.

The previous prime is 212021122177. The next prime is 212021122259. The reversal of 212021122194 is 491221120212.

It is a Curzon 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, 2172177 + ... + 2267684.

It is an arithmetic number, because the mean of its divisors is an integer number (10966459140).

Almost surely, 2^212021122194 is an apocalyptic number.

212021122194 is an abundant number, since it is smaller than the sum of its proper divisors (314368916526).

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

212021122194 is a wasteful number, since it uses less digits than its factorization.

212021122194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440255 (or 4440252 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The spelling of 212021122194 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-two thousand, one hundred ninety-four".