211111220194 has 8 divisors (see below), whose sum is σ = 361904948928. Its totient is φ = 90476237220.

The previous prime is 211111220171. The next prime is 211111220219. The reversal of 211111220194 is 491022111112.

211111220194 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7539686422 + ... + 7539686449.

It is an arithmetic number, because the mean of its divisors is an integer number (45238118616).

Almost surely, 2^211111220194 is an apocalyptic number.

211111220194 is a deficient number, since it is larger than the sum of its proper divisors (150793728734).

211111220194 is a wasteful number, since it uses less digits than its factorization.

211111220194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15079372880.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 211111220194 in words is "two hundred eleven billion, one hundred eleven million, two hundred twenty thousand, one hundred ninety-four".