2000011001 has 2 divisors, whose sum is σ = 2000011002. Its totient is φ = 2000011000.

The previous prime is 2000010997. The next prime is 2000011009. The reversal of 2000011001 is 1001100002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1104565225 + 895445776 = 33235^2 + 29924^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000011001 - 2² = 2000010997 is a prime.

It is not a weakly prime, because it can be changed into another prime (2000011009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000005500 + 1000005501.

It is an arithmetic number, because the mean of its divisors is an integer number (1000005501).

Almost surely, 2^2000011001 is an apocalyptic number.

It is an amenable number.

2000011001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000011001 is an equidigital number, since it uses as much as digits as its factorization.

2000011001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2, while the sum is 5.

The square root of 2000011001 is about 44721.4825447458. The cubic root of 2000011001 is about 1259.9233599559.

Adding to 2000011001 its reverse (1001100002), we get a palindrome (3001111003).

The spelling of 2000011001 in words is "two billion, eleven thousand, one".