211111222194 has 12 divisors (see below), whose sum is σ = 457407648126. Its totient is φ = 70370407392.

The previous prime is 211111222151. The next prime is 211111222219. The reversal of 211111222194 is 491222111112.

It can be written as a sum of positive squares in only one way, i.e., 148992140025 + 62119082169 = 385995^2 + 249237^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5864200599 + ... + 5864200634.

Almost surely, 2^211111222194 is an apocalyptic number.

211111222194 is an abundant number, since it is smaller than the sum of its proper divisors (246296425932).

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

211111222194 is a wasteful number, since it uses less digits than its factorization.

211111222194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11728401241 (or 11728401238 counting only the distinct ones).

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

The spelling of 211111222194 in words is "two hundred eleven billion, one hundred eleven million, two hundred twenty-two thousand, one hundred ninety-four".