1000020011 has 2 divisors, whose sum is σ = 1000020012. Its totient is φ = 1000020010.

The previous prime is 1000020001. The next prime is 1000020023. The reversal of 1000020011 is 1100200001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000020011 - 2¹⁸ = 999757867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000019977 and 1000020004.

It is not a weakly prime, because it can be changed into another prime (1000020001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500010005 + 500010006.

It is an arithmetic number, because the mean of its divisors is an integer number (500010006).

Almost surely, 2^1000020011 is an apocalyptic number.

1000020011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000020011 is an equidigital number, since it uses as much as digits as its factorization.

1000020011 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 1000020011 is about 31623.0930017922. The cubic root of 1000020011 is about 1000.0066702888.

Adding to 1000020011 its reverse (1100200001), we get a palindrome (2100220012).

The spelling of 1000020011 in words is "one billion, twenty thousand, eleven".