222201091 has 16 divisors (see below), whose sum is σ = 266918400. Its totient is φ = 180848448.

The previous prime is 222201061. The next prime is 222201097. The reversal of 222201091 is 190102222.

It is not a de Polignac number, because 222201091 - 2⁹ = 222200579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222201097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17415 + ... + 27343.

It is an arithmetic number, because the mean of its divisors is an integer number (16682400).

Almost surely, 2^222201091 is an apocalyptic number.

222201091 is a deficient number, since it is larger than the sum of its proper divisors (44717309).

222201091 is a wasteful number, since it uses less digits than its factorization.

222201091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10098.

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

The square root of 222201091 is about 14906.4110704086. The cubic root of 222201091 is about 605.6876646793.

The spelling of 222201091 in words is "two hundred twenty-two million, two hundred one thousand, ninety-one".