220330191 has 4 divisors (see below), whose sum is σ = 293773592. Its totient is φ = 146886792.

The previous prime is 220330181. The next prime is 220330193. The reversal of 220330191 is 191033022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 220330191 - 2¹³ = 220321999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220330193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36721696 + ... + 36721701.

It is an arithmetic number, because the mean of its divisors is an integer number (73443398).

Almost surely, 2^220330191 is an apocalyptic number.

220330191 is a deficient number, since it is larger than the sum of its proper divisors (73443401).

220330191 is an equidigital number, since it uses as much as digits as its factorization.

220330191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73443400.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 220330191 is about 14843.5235372199. The cubic root of 220330191 is about 603.9829379491.

The spelling of 220330191 in words is "two hundred twenty million, three hundred thirty thousand, one hundred ninety-one".