191020222 has 8 divisors (see below), whose sum is σ = 286604496. Its totient is φ = 95485392.

The previous prime is 191020217. The next prime is 191020223. The reversal of 191020222 is 222020191.

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

It is a self number, because there is not a number n which added to its sum of digits gives 191020222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191020223) 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 3 ways as a sum of consecutive naturals, for example, 378 + ... + 19549.

It is an arithmetic number, because the mean of its divisors is an integer number (35825562).

Almost surely, 2^191020222 is an apocalyptic number.

191020222 is a deficient number, since it is larger than the sum of its proper divisors (95584274).

191020222 is a wasteful number, since it uses less digits than its factorization.

191020222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24722.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 191020222 is about 13821.0065480051. The cubic root of 191020222 is about 575.9168455545.

The spelling of 191020222 in words is "one hundred ninety-one million, twenty thousand, two hundred twenty-two".