2204320091 has 2 divisors, whose sum is σ = 2204320092. Its totient is φ = 2204320090.

The previous prime is 2204320087. The next prime is 2204320109. The reversal of 2204320091 is 1900234022.

Together with next prime (2204320109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2204320091 - 2² = 2204320087 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2204320061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1102160045 + 1102160046.

It is an arithmetic number, because the mean of its divisors is an integer number (1102160046).

Almost surely, 2^2204320091 is an apocalyptic number.

2204320091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2204320091 is an equidigital number, since it uses as much as digits as its factorization.

2204320091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2204320091 is about 46950.1873372194. The cubic root of 2204320091 is about 1301.4422043751.

The spelling of 2204320091 in words is "two billion, two hundred four million, three hundred twenty thousand, ninety-one".