2001220027 has 2 divisors, whose sum is σ = 2001220028. Its totient is φ = 2001220026.

The previous prime is 2001220019. The next prime is 2001220051. The reversal of 2001220027 is 7200221002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001220027 - 2³ = 2001220019 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001220007) 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, 1000610013 + 1000610014.

It is an arithmetic number, because the mean of its divisors is an integer number (1000610014).

Almost surely, 2^2001220027 is an apocalyptic number.

2001220027 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001220027 is an equidigital number, since it uses as much as digits as its factorization.

2001220027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 2001220027 is about 44734.9977869676. The cubic root of 2001220027 is about 1260.1771874359.

Adding to 2001220027 its reverse (7200221002), we get a palindrome (9201441029).

The spelling of 2001220027 in words is "two billion, one million, two hundred twenty thousand, twenty-seven".