222020191 has 2 divisors, whose sum is σ = 222020192.
Its totient is φ = 222020190.
The previous prime is 222020179. The next prime is 222020213. The reversal of 222020191 is 191020222.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 222020191 - 25 = 222020159 is a prime.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (222020131) 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 as a sum of consecutive naturals, namely, 111010095 + 111010096.
It is an arithmetic number, because the mean of its divisors is an integer number (111010096).
Almost surely, 2222020191 is an apocalyptic number.
222020191 is a deficient number, since it is larger than the sum of its proper divisors (1).
222020191 is an equidigital number, since it uses as much as digits as its factorization.
222020191 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 144, while the sum is 19.
The square root of 222020191 is about 14900.3419759414.
The cubic root of 222020191 is about 605.5232510756.
The spelling of 222020191 in words is "two hundred twenty-two million, twenty thousand, one hundred ninety-one".