2001322291 has 2 divisors, whose sum is σ = 2001322292. Its totient is φ = 2001322290.

The previous prime is 2001322201. The next prime is 2001322363. The reversal of 2001322291 is 1922231002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001322291 - 2⁷ = 2001322163 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001322201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000661145 + 1000661146.

It is an arithmetic number, because the mean of its divisors is an integer number (1000661146).

Almost surely, 2^2001322291 is an apocalyptic number.

2001322291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001322291 is an equidigital number, since it uses as much as digits as its factorization.

2001322291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 2001322291 is about 44736.1407700754. The cubic root of 2001322291 is about 1260.1986524361.

Adding to 2001322291 its reverse (1922231002), we get a palindrome (3923553293).

The spelling of 2001322291 in words is "two billion, one million, three hundred twenty-two thousand, two hundred ninety-one".